The ratio of the number of people who own a smartphone to the number of people who own a flip phone is 4:3. If 500 people own a smartphone,
how many people own a flip phone?

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.