Question

3.The snow starts at a depth of 10 inches and melts to 2 inches over the span of 4 hours. Determine the rate of change over the interval 0≤x≤4

A.4 inches per hour

B.2 inches per hour

C.8 inches per hour

D.12 inch per hour

4.The population in a neighborhood increased from 120 to 156 people from 1990 to 1994. Find the rate of change over the interval 1990≤x≤1994.

A.1/9 of a person per year

B.9 people per year

C.36 people per year

D.4 people per year

5.The temperature increases from 60 degrees Fahrenheit to 84 degrees Fahrenheit from 8 in the morning to 12 in the afternoon. Find the rate of change over the interval 8≤x≤12

A.16 of a degree Fahrenheit per hour

B.4 degrees Fahrenheit per hour

C.6 degrees Fahrenheit per hour

D.24 degrees Fahrenheit per hour

Answer 1

The answer is A 4 inches per hour

Answer 2

Explanation:

#4: 156-120= 36

36÷4=9

Answer: B; 9 people per year

Explanation:

#5: 84-60=24

24÷4=6

Answer: C; 6 degrees Fahrenheir per hour