can you help me please

Question

1. Temperature (

F)	40	50	60	70	80	90
Chirps per minute	0	40	80	120	160	200

40 to 50: 

 

50 to 60: 

 

60 to 70: 

 

70 to 80: 

 

80 to 90: 

Answer 1

The key to doing these types of problems is subtracting the change in each variable and dividing them accordingly. In this problem we want the rate of change of the number of cricket chirps per minute (n) per increase in temperature (T). So we will divide the difference between cricket chirps by the change in temperature for every given interval.

1) 40 to 50:

n = (40 - 0) = 40, T = (50 - 40) = 10 --> 40/10 = 4 (this is how much the number of chirps per minute increased for every 1 degree difference).

2) 50 to 60:

n = (80 - 40) = 40, T = (60 - 50) = 10 --> 40/10 = 4

3) 60 to 70:

n = (120 - 80) = 40, T = (70 - 60) = 10 --> 40/10 = 4

4) 70 to 80:

n = (160 - 120) = 40, T = (80 - 70) = 10 --> 40/10 = 4

5) 80 to 90:

n = (200 - 160) = 40, T = (90 - 80) = 10 --> 40/10 = 4