The data from the previous table is
plotted to the right. The distance the
boat traveled is on the x-axis, and the
vertical position of the barnacle is on the
y-axis.
The graph follows the
pattern.

Zero-max-zero-min-zero

Just did it on edge2020

b) the dogs need to shift their focus to human scent.

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold