Can you solve this for me? f(x) = -3x2 + 2x - 7

f(x) = 2x - 1 

First, this is a special notation that does NOT mean f times x. It is a special notation that is read "f of x", and it means that you are to substitute a value of x into this formula and simplify the result to find the value of the answer. It is MUCH easier than everyone can possibly imagine. 
Given 
f(x) = 2x - 1 
f(-3) means that you sustitute the value of -3 in place of the x value(s).
f(-3) = 2(-3) - 1

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.