Question

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problem solving

1. kasi bought 7 pounds of mozzarella cheese. each pound costs $4.29. about how much did he spend altogether?

1. ariel buys 2 fish tanks at the pet store. each tank holds 9.7 liters of water. how many liters of water will she need to fill both tanks?

1. it costs $4.25 for one pound of roast beef. how much will it cost to purchase 2.5 pounds of roast beef? round to the nearest cent.

1. describe the pattern below. what are the next two numbers?

0.41, 0.82, 1.64, 3.28

1. the total bill for a dinner party was $113.58. if each person pays $12.62, how many people attended the dinner party?

test practice

1. sofia paints a rectangular mural on the wall. the area of the mural is 128.52 square feet. the mural is 12.6 feet wide. what is the height of the mural?

ⓐ 115.92 ft ⓒ 10.2 ft
ⓑ 105.2 ft ⓓ 8.6 ft

Explanation:

Problem 21

Step1: Estimate total cost

$\text{Total Cost} = 7 \times 4.29$

Step2: Calculate the product

$7 \times 4.29 = 29.93$

Problem 22

Step1: Find total water volume

$\text{Total Volume} = 2 \times 9.7$

Step2: Calculate the product

$2 \times 9.7 = 19.4$

Problem 23

Step1: Calculate total cost

$\text{Total Cost} = 4.25 \times 2.5$

Step2: Compute and round to cent

$4.25 \times 2.5 = 10.625 \approx 10.63$

Problem 24

Step1: Identify the pattern

$0.82 \div 0.41 = 2$, $1.64 \div 0.82 = 2$, $3.28 \div 1.64 = 2$

Step2: Find next two numbers

$3.28 \times 2 = 6.56$; $6.56 \times 2 = 13.12$

Problem 25

Step1: Calculate number of people

$\text{Number of People} = \frac{113.58}{12.62}$

Step2: Compute the quotient

$\frac{113.58}{12.62} = 9$

Problem 26

Step1: Rearrange area formula for height

$\text{Height} = \frac{\text{Area}}{\text{Width}} = \frac{128.52}{12.6}$

Step2: Calculate the quotient

$\frac{128.52}{12.6} = 10.2$

Answer:

1. About $29.93
2. 19.4 liters
3. $10.63
4. Pattern: Multiply by 2; Next two numbers: 6.56, 13.12
5. 9 people
6. C. 10.2 ft