Question

If f (x) = x+5, g(x) =2x-3, h(x) =2×2 +7 x, -15, i(x) =x+2 find h(4)
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Answer 1

h(4)=17

Explanation:

Since we are just looking for h(4), all the other equations can be ignored. Then we replace the x in the equation with 4. Remember to do the multiplication before adding the numbers together according to PEMDAS (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction)

`h(4)=2*2+7(4)-15\\h(4)=2*2+28-15\\h(4)=4+28-15\\h(4)= 32-15\\h(4)=17`