you fly your kite at an angle of 45 degrees above the horizon an you notice that you have unrolled 75 feet of string. How high above the ground is the kite, to the nearest foot

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

With alll of except for the 2 that i did already

Having a hard time understanding this question (see attachment).