Question 11:
For this case we have a linear equation of the form:
y = mx + b
Where,
m: rate of change
x: number of hours
b: fee charge
In this case we have:
b = 55 $
m = $ 40 / hour
Substituting the values we have:
y = 40x + 55
Answer:
y = 40x + 55
option 2
Question 12:
For this case, what we should do is use the following equation:
h = v * t + h0
Where,
v: speed
t: time
h0: initial height
h: final height
Substituting values we have:
102 = 4.2 * t + 27
Clearing the time we have:
t = (102-27) / (4.2)
t = 17.86 seconds
Answer:
t = 17.86 seconds
option 2