F(x) = 10x - 15. What value of x makes f(x) = 75?
2 answers:
Answer:
x=9
Step-by-step explanation:
Set the function equal to 75 and solve for x.
75=10x-15
add 15 to each side
90=10x
divide each side by 10 to isolate x
9=x or x=9
Answer:
x = 9
Step-by-step explanation:
f(x) = 10x - 15
f(x) = 75
Plug in 75 for f(x)
75 = 10x - 15
add 15 from either side
90 = 10x
divide either side by 10
9 = x
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