An ivestment of $8,200 loses value at a rate of 2% per year. Find the value of the investment after 9 years

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

Ten times the square of a non-zero number is eqaul to ninety times the number

Solve the equation by completing the square. x^2+2x=17