Question

The librarian’s assistant is given $200 to buy a collection of books for the library. Paperback books cost $3.50 each, and hardcover books cost $8 each. The librarian wants at least 20 hardcover books for the collection. Which of the following systems correctly describes the number of paperbacks (p) and hardcover books (h) the assistant can purchase

Answer 1

At least 20
8*20=160

200-160=40
40=money left to buy paperbacks
so
3.5p+8h<200
such that
h>20

so grahp the 2 equations
3.5p+8h<200
h>20

those are it