Solve for the value of the function using the given value of x.
11. f(x) -2x, when x is -1.
12. f(x)
= 5x 5, when x is -3.
13. f(x)
f(x) = -3x + 3, when x is 4.
14. f(x) = 2x + 2, when x is 0.
15. f(x) = 10x + when x is 2.
27
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