Final answer:
The expressions are evaluated by substituting the given values or variables into the functions.
Step-by-step explanation:
a. g(10) = -3(10) + 1 = -30 + 1 = -29
b. f(3) = (3)^2 + 7 = 9 + 7 = 16
c. h(-2) = 12/(-2) = -6
d. j(7) = 2(7) + 9 = 14 + 9 = 23
e. h(a) = 12/a
f. g(b+c) = -3(b+c) + 1 = -3b - 3c + 1
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