Answer:
units
Step-by-step explanation:
Distance between 2 points
= 
Thus distance between (-2, -1) and (6, 8)

Answer:
y = 75 - 9d
Step-by-step explanation:
y = amount of $ left
Answer:
a^2
−10a+21
Step-by-step explanation:
(a−7)(a−3)
Apply the distributive property by multiplying each term of a−7 by each term of a−3.
a^2
−3a−7a+21
Combine −3a and −7a to get −10a.
a^2
−10a+21