Lucy goes to a restaurant and the subtotal on the bill was
x
x dollars. A tax of 4% is applied to the bill. Lucy decides to leave a tip of 22% on the entire bill (including the tax). Write an expression in terms of
x
x that represents the total amount that Lucy paid.

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

How do you find principle and simple interest