Help find the equation of the tangent line please (calculus)

The tangent line to f(x) at x = c has slope equal to the derivative at c, or f'(c).

We have

f(x) = 3 - 2 x + 7 x²

so that

f'(x) = -2 + 14 x

The slope is 5 for

-2 + 14 x = 5   ==>   14 x = 7   ==>   x = 1/2

Now, f (1/2) = 15/4, so the tangent line has equation

y - 15/4 = 5 (x - 1/2)   ==>   y = 5 x + 5/4

answer: i think you should do the math and pay attention in class : )

step-by-step explanation:

that is truly what   think but if i get the answer i will