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Let f(x) = 4x + 2 and g(x) = x + 3
. Find each function. Enter each expression without any blank spaces.
a.(f+g)(x) =
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b.(f-g)(x)
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step-by-step explanation:

a and c

for infinitely many solutions we require both left and right sides to be equal

distribute and simplify

a

14 - 8x = 20 - 8x - 6 = 14 - 8x ← both sides equal so infinite solutions

b

6x - 54 = 6x - 54 + x = 7x - 54 ← not equal

c

4x + 16 = 4x + 10 + 6 = 4x + 16 ← both sides equal so infinite solutions

d

5x - 40 + 10 = 5x + 10

5x - 30 = 5x + 10 ← not equal

c ) y = 2.5 x - 26.25