a bookstore sold a total 43 paperback and hardback books. each paperback books costs $4.50, and each hardback book costs $12.00.
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Hi there!
f(x) = -2x - 3
Plug in 0 for "x" to solve for f(0):
f(0) = -2(0) - 3
f(0) = -3
Since the question is asking you to evaluate f(0) - 7, simply subtract:
-3 - 7 = -10.