A local radio station has 30 concert tickets. They give away 2 tickets each hour until the tickets are gone.
Which equation represents the number of concert tickets, y, left after x hours?
A. y = -30x + 2
B. y = -2x - 30
C. y = -2x + 30
D. y = 2x + 30
E y = 30x - 2

Find the amount in a continuously compounded account for the given condition. principal: $1000, annual interest rate: 4.8%, time: 2 yr

Is a positive integer raised to a negative power always positive

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?