Pls Help Unit Rate easy math

What is the logarithmic function modeled by the following table? x f(x) 9 2 27 3 81 4

Find the value of the cosine for angle a

Brent needs to paint a logo made using two right triangles. the dimensions of the logo are shown below. what is the difference between the area of the large triangle and the area of the small triangle? (1 point) select one: a. 4.5 cm2 b. 8.5 cm2 c. 16.5 cm2 d. 33.0 cm2