in 7-14, find the unit cost.
7. 24 cans of soda for $4.99
8. 4 batteries for $5.99
9. 48 granola bars for $7.50
10. 36 rolls of toilet paper for $14.00
11. ( x ) paper plates for $12
12. ( y ) fruit cups for $6.49
13. 12 markers for $a
14. 10 juice boxes for $b
jason delivers 300 newspapers in 90 minutes.
15. how many newspapers does he deliver per minute?
16. how many newspapers does he deliver per hour?

Question

Accepted Answer

### Problem 7: 24 cans of soda for $4.99
# Explanation:
## Step1: Recall unit cost formula
Unit cost is total cost divided by number of units, so formula is $	ext{Unit Cost} = \frac{	ext{Total Cost}}{	ext{Number of Units}}$.
## Step2: Substitute values
Total cost is $4.99, number of units is 24. So $	ext{Unit Cost} = \frac{4.99}{24}$.
## Step3: Calculate the division
$\frac{4.99}{24} \approx 0.2079$ (rounded to four decimal places).
# Answer:
Approximately $\$0.21$ per can (or more precisely $\$ \approx 0.208$ per can)

### Problem 8: 4 batteries for $5.99
# Explanation:
## Step1: Use unit cost formula
$	ext{Unit Cost} = \frac{	ext{Total Cost}}{	ext{Number of Units}}$.
## Step2: Substitute values
Total cost = $5.99, number of units = 4. So $	ext{Unit Cost} = \frac{5.99}{4}$.
## Step3: Perform division
$\frac{5.99}{4} = 1.4975$.
# Answer:
$\$1.50$ per battery (or $\$1.4975$ per battery)

### Problem 9: 48 granola bars for $7.50
# Explanation:
## Step1: Apply unit cost formula
$	ext{Unit Cost} = \frac{	ext{Total Cost}}{	ext{Number of Units}}$.
## Step2: Substitute values
Total cost = $7.50, number of units = 48. So $	ext{Unit Cost} = \frac{7.50}{48}$.
## Step3: Calculate the value
$\frac{7.50}{48} = 0.15625$.
# Answer:
$\$0.15625$ per granola bar (or $\$0.16$ when rounded to the nearest cent)

### Problem 10: 36 rolls of toilet paper for $14.00
# Explanation:
## Step1: Use unit cost formula
$	ext{Unit Cost} = \frac{	ext{Total Cost}}{	ext{Number of Units}}$.
## Step2: Substitute values
Total cost = $14.00, number of units = 36. So $	ext{Unit Cost} = \frac{14.00}{36}$.
## Step3: Simplify the division
$\frac{14.00}{36} \approx 0.3889$ (rounded to four decimal places).
# Answer:
Approximately $\$0.39$ per roll (or $\$ \approx 0.389$ per roll)

### Problem 11: $x$ paper plates for $12
# Explanation:
## Step1: Recall unit cost formula
$	ext{Unit Cost} = \frac{	ext{Total Cost}}{	ext{Number of Units}}$.
## Step2: Substitute values
Total cost = $12, number of units = $x$. So $	ext{Unit Cost} = \frac{12}{x}$.
# Answer:
$\frac{12}{x}$ dollars per paper plate

### Problem 12: $y$ fruit cups for $6.49
# Explanation:
## Step1: Apply unit cost formula
$	ext{Unit Cost} = \frac{	ext{Total Cost}}{	ext{Number of Units}}$.
## Step2: Substitute values
Total cost = $6.49, number of units = $y$. So $	ext{Unit Cost} = \frac{6.49}{y}$.
# Answer:
$\frac{6.49}{y}$ dollars per fruit cup

### Problem 13: 12 markers for $\$a$
# Explanation:
## Step1: Use unit cost formula
$	ext{Unit Cost} = \frac{	ext{Total Cost}}{	ext{Number of Units}}$.
## Step2: Substitute values
Total cost = $a$, number of units = 12. So $	ext{Unit Cost} = \frac{a}{12}$.
# Answer:
$\frac{a}{12}$ dollars per marker

### Problem 14: 10 juice boxes for $\$b$
# Explanation:
## Step1: Apply unit cost formula
$	ext{Unit Cost} = \frac{	ext{Total Cost}}{	ext{Number of Units}}$.
## Step2: Substitute values
Total cost = $b$, number of units = 10. So $	ext{Unit Cost} = \frac{b}{10}$.
# Answer:
$\frac{b}{10}$ dollars per juice box

### Problem 15: Jason delivers 300 newspapers in 90 minutes. How many newspapers does he deliver per minute?
# Explanation:
## Step1: Recall rate formula
Rate (newspapers per minute) = $\frac{	ext{Total Newspapers}}{	ext{Total Time (minutes)}}$.
## Step2: Substitute values
Total newspapers = 300, total time = 90 minutes. So rate = $\frac{300}{90}$.
## Step3: Simplify the fraction
$\frac{300}{90} = \frac{10}{3} \approx 3.333...$
# Answer:
$\frac{10}{3}$ or approximately $3.33$ newspapers per minute

### Problem 16: How many newspapers does he deliver per hour?
# Explanation:
## Step1: First find per minute rate (from problem 15, we know it's $\frac{10}{3}$ newspapers per minute)
## Step2: Convert minutes to hours (1 hour = 60 minutes)
Multiply per minute rate by 60: $	ext{Rate per hour} = \frac{10}{3} 	imes 60$.
## Step3: Calculate the product
$\frac{10}{3} 	imes 60 = 10 	imes 20 = 200$.
# Answer:
200 newspapers per hour

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QUESTION IMAGE

Question

Explanation:

Problem 7: 24 cans of soda for $4.99

Step1: Recall unit cost formula

Step2: Substitute values

Step3: Calculate the division

Step1: Use unit cost formula

Step2: Substitute values

Step3: Perform division

Step1: Apply unit cost formula

Step2: Substitute values

Step3: Calculate the value

Answer:

Problem 8: 4 batteries for $5.99