Tutor profile: Mena H.

Gertie is looking at a tree that is 100 feet away from her nest. If the angle of elevation between Gertie’s nest and the top of the tree is 23°, how tall is the tree?

tan 23 = x/100 x= 100 * tan 23 x=42.4 ft.

A gallon of paint will cover approximately 450 square feet. An artist wants to paint all the outside surfaces of a cube measuring 12 feet on each edge. What is the least number of gallons of paint he must buy to paint the cube?

SA = 6 ⋅ (12)^2 = 864 864/450 = 1.92

For a recently released movie, the function y = 119.67(0.61)^x models the revenue earned, y, in millions of dollars each week, x, for several weeks after its release. Based on the equation, how much more money, in millions of dollars, was earned in revenue for week 3 than for week 5?

119.67(0.61)^5 − 119.67(0.61)^ 3 ≈ 17.06