Ana works for a salon in the mall. She earns an hourly wage of $6.25 from
the salon, as well as an 8% commission for each client from the $19.95 price the client
pays. If she works 30 hours one week and sees 40 clients, how much did she make in
the week?
a. $ 63.84
b. $187.50
c. $251.34
d. $297.88

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

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?

I'm confused on this could anyone me and show me what i need to do to solve it.