mrs smith baked 40 turnovers. Her son ate 1/8 of the turnovers and her husband ate 1/7 of what was left. How many were left after her husband finished?

30

Step-by-step explanation:

Total turnover = 40

Son = 1/8×40 = 1×5 = 5

Amount left after son finished = 40-5 = 35

Husband = 1/7×35 = 1×5 = 5

Amount left after husband finished = 35-5 = 30

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50