Answer:
Step-by-step explanation:
(-5,-8), (-7,3)
midpoint = (x₁+x₂/2, y₁+y₂/2)
= ( -5+-7/2 , -8+3/2) = (-5-7/2,-8+3/2)
= (-12/2, -5/2) = (-6,-5/2)
....
D) It is the sum of the initial amount and the additional amount after d days.
He is adding them together to find the sum, not multiplying them together to find the product.