10 points!

use the triangle below to fill in the blanks.

cosine of angle =
sine of angle =
tangent of angle=

How do you write something in scientific notation?

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

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.