A computer repair company charges an initial fee plus $40 per hour for repair work. The total cost for 3 hours of work is $150. Assume the relationship is linear. Find and interpret the rate of change and the initial value.

Rate of change = 40

Initial value = 30

Step-by-step explanation:

150 = 3(40) + b

b = 30

I created this equation to mean 150 is the total which comes from 40 per hour (in this case it was 3), and I got the b to equal 30.

The equation shows that the rate of change is 40 and the initial value is 30.

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

b

step-by-step explanation:

i dont know