Question

Mason compares two plans for an online book club.

Which equation can be used to solve for the number of books,
b
, for which the cost of Plan
A
equals

Answer 1

Equating the the expression for the cost of Plan A to the expression for the

cost for Plan B yields an equation with variables on both sides.

• The equation that can be used to solve for the number of books, b, for which the cost of Plan A equals Plan B is; 12·b = 75 + 3·b

Reasons:

The book plans are;

Plan A;

Membership fee = None

Fee per book = $12

Plan B;

Membership fee = $75

Fee per book = $3

Therefore;

The cost of b number of books on Plan A is $C_A$ = 12·b

The cost of b number of books on Plan B is $C_B$ = 75 + 3·b

When the cost of Plan A equals the cost of Plan B, we have;

• $C_A$ = $C_B$

Which gives;

12·b = 75 + 3·b

The equation to find the number of books, b, at which the cost of both plans are equal is therefore;

• 12·b = 75 + 3·b

Learn more about variables in an equation here:

https://brainly.com/question/582266

Answer 2

Answer:

12b=3b+75

Step-by-step explanation: