Answer:
In step 2, he needed to divide both sides of the equation by 5
Step-by-step explanation:
we have

Solve for a------> That means isolate the variable "a"
step 1
Subtract 2b to both sides


step 2
Divide by 5 both sides


Oof I’m not quite sure how to do that
Answer:
3/4 written as a percent would be 75%
Answer:
21
Step-by-step explanation:
Negative times negative is positive.
-3(-7) = 21
Answer:
Zeros of Functions. A zero of a function f is a number a such that f(a) = 0. In other words, a zero of f is a solution for the equation f(x) = 0.
Step-by-step explanation: