Question

F (x)=x+3x find f(2)

f(x)=3x-2 find f(-10)

help please

Answer 1

1) f(2) = 8

2) f(-10) = -32

Explanation:

Whenever you see a problem that asks something like what f(2) or f(-10) is, it is asking you to substitute whatever number is in the parentheses for every x in the given function.

1) So, to find f(2), substitute 2 for every x in the given function, f(x) = x + 3x and solve:

`f(2) = (2)+3(2)\\f(2) = 2 + 6 \\f(2) = 8`

Thus, for this function, f(2) = 8.

2) Do the same with the second question. Substitute -10 for every x in the given function, f(x) = 3x - 2.

`f(-10) = 3(-10) - 2 \\f(-10) = -30-2\\f(-10) = -32`

Thus, for this function, f(-10) = -32.

Answer 2

f(x)=3x-2 is 4x i dont know bout the other one

Explanation: