From a point 80 m from the base of a tower, the angle of elevation to the top of the tower is 28°. How tall is the tower?

Can someone me and do the problem plz so i can understand it more better

Which of the following is true about the graph of f(x)=7^x. select all that apply. a= it intercepts the x axis b=it intercepts both axis c=it intercepts neither d=it intercepts the y axis

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals