What is the number of cycles of y=9cos(θ/4+3π/2)+4 between 0 and 2π? A. 1/2
B. 9
C. 1/4
D. 4

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?