Emily wants to buy new boots that cost $68. The sales tax rate in her city is 512% . What is the total cost for the boots?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

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?

What does the sign of the slope tell you about a line?