Answer:
71.4
Step-by-step explanation:
The Test
x = 6
given f(x) = 310, we obtain the equation
10 + 50x = 310 ( subtract 10 from both sides )
50x = 300 ( divide both sides by 50 )
x =
= 6
4*6 = 24. (4 dollars to spare)
(5*2) + (4*4) = 26 (2 dollars to spare)
^ ^
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