Question

1. dimitri normally blinks an average of 21.3 times per minute. how many times will he blink in 2.8 minutes? if he blinks 78.5 times per minute when he is nervous, how many times will he blink in 1.38 minutes while he is nervous?
2. a landscaping company charges $2.25 per square foot of flowers added to a yard. if a family wants 12.4 square feet of flowers added to a garden, how much will they have to pay?

Explanation:

Step1: Calculate normal blinks

Multiply rate by time.
$21.3 \times 2.8 = 60.64$

Step2: Calculate nervous blinks

Multiply nervous rate by time.
$78.5 \times 1.38 = 108.33$

Step3: Calculate landscaping cost

Multiply rate by area.
$2.25 \times 12.4 = 27.9$

Answer:

1. Normal blinks in 2.8 minutes: 60.64
2. Nervous blinks in 1.38 minutes: 108.33
3. Landscaping cost: $\$27.90$