If f(x) = 2x and g(x) = 5x + 2, what is (f – g)(x) when x = 3

The class wants to raise a total of $750.if they receive a profit of $1.25 from each candybar sold, how many bars must they sell to reachtheir goal

Answer for 10 points show work you guys in advanced < 3

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.