What are the amplitude, period, and phase shift of the given function? f(t)= -1/3sin(4t-3pi)

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).