Simple Quadratic equation given a formula

The revenue each season from tickets at the theme park is represented by t(c)=5x. the cost to pay the employees each season is represented by r(x)=(1.5)^x. examine the graph of the combined function for total profit and estimate the profit after four seasons

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

Solve the triangle. a = 21°, c = 105°, c = 5