Raul deposited $3000 into a bank account that earned simple interest each year. after 3.5 years, he had earned $262.50 in interest. if no money was deposited into or withdrawn from the account, what was the annual interest rate?

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?