How to change a logarithmic equation into exponential form?

Which of the following is true for the relation f(x)=2x^2+1

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.

Write as a product of two polynomials. 2(3–b)+5(b–3)^2