What is the value of x if f(x)=23. f(x)=x^2-7

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

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?

Atotal of 766 tickets were sold for the school play. they were either adult tickets or student tickets. there were 66 more student tickets sold than adult tickets. how many adult tickets were sold?