!PLEASE HELP! Erin borrowed $7,620.00 at 5.75% for 21 months. How much did she have to pay back in total
(including interest) at the end of the 21 months?

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

Find cot x if sin x cot x csc x = √2