David went to get a haircut for $20. He wants to give his barber a 13% tip. How much will David pay for his haircut?

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

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?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12