Shaima earns 58 dollars per week working part-time at a book store. She makes one dollar more for each book that she sells. The amount, A (in dollars), that Shaima earns in a week if she sells b books is given by the following function. =A B+58b How much does Shaima earn in a week if she sells 21 books
You have the (incorrectly written) formula, so plug in the numbers!
A = 58 + b = 58+21 = 79
To find out how much Shaima earns in a week if she sells 21 books, we can substitute the value of b = 21 into the function A = 58 + b.
Plugging in b = 21:
A = 58 + (21)
A = 58 + 21
A = 79
Therefore, Shaima will earn $79 in a week if she sells 21 books.