Question

80

Answer 1

Answer:

Step-by-step explanation:

D is the answer

Answer 2

Answer:

The cricket make approximately 3 chirps in  15 seconds if the temperature is 80°F.

Step-by-step explanation:

We are given the following in the question:

$y = 15x + 37$

The above equation is used approximate the temperature y in degrees Fahrenheit based  on the number of chirps x a cricket makes in 15 seconds.

The attached image shows the graph for the given equation.

Now, we have to find  the number of chirps a cricket will make in  15 seconds if the temperature is 80°F.

Putting y = 80 in the given equation, we get:

$y = 15x + 37\\80 = 15x+37\\15x = 80-37\\15x = 43\\x = 2.8667 \approx 3$

Thus, the cricket make approximately 3 chirps in  15 seconds if the temperature is 80°F.