Can someone please answer my three math questions I’ll give u five stars I rlly need them thanks if u need the link for the questions I’ll give them to u

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

Ialready asked this but i never got an answer. will give a high rating and perhaps brainliest. choose the linear inequality that describes the graph. the gray area represents the shaded region. y ≤ –4x – 2 y > –4x – 2 y ≥ –4x – 2 y < 4x – 2

Asporting good store is offering 30 percent off of the original price(x) of football cleats. the discount will be reduced by an another $7 before sales tax.