Gillian purchased 25 books at the library book sale. each hardcover book cost $1.50, and each paperback book cost $0.50. gillian spent a total of $26.50. the book costs can be represented by the system of equations below.

h + p = 25
1.50h + 0.50p = 26.50
how many paperback books did gillian buy? 11
12
13
14

11

Step-by-step explanation:

The given system of equations, where p represents the number of paperback books and h represents the number of hardcover books :

Multiply equation (1) with 2 on both sides , we get

Subtract equation (2) from equation (3), we get

Put the value of h in equation (1), we get

Hence, the number of paperback books bought by Gillian = 11.

this shows a reflection over the x-axis and is translated one unit down and 6 units to the right (x + 6, y - 1)

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