Find (f +g) (x) when f(x) = x +3 and g(x) = x - 3

a) 2x+6

b) 2x

c) 2x-6

d) 6

PLEASE I NEED HELP SO MUCH I DONT UNDERSTAND (repost cause the x showed up as 2)

Tanya has $42 to spend at the dolphin island store. tshirts sell for $7 each and a pair of sunglases sells for $6.tanya buys 3 tshirts. how many pairs of sunglases can she buys with the amount of money she has left

At which value in the domain does f(x) =0?

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible