Which equation represents a circle with a center at (–4, 9) and a diameter of 10 units?

A circle with a center at (–4, 9) and a diameter of 10 units or radius of 5 units, would be the below equation:

(x + 4)^2 + (y - 9)^2 = 5^2

Hope this helps!

:)

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