Number 15
You can find the rate of change by
rate of change = number of seeds/number of apples
So if you calculate one of the rows
rate of change = 30/3
rate of change = 10/1
Answer is a
Number 16
General formula to find the slope is
m = (y₂ - y₁) / (x₂ - x₁)
Choose 2 points to calculate the slope. I choose (1,4) and (3,12)
m = (y₂ - y₁) / (x₂ - x₁)
m = (12 - 4) / (3 - 1)
m = 8/2
m = 4
