moby sold half his toy cars collection, and then bought 12 more cars the next day. He now has 48 toy cars. how many toy cars did he have to start with?

If 20% of a number is 35, what is 50% of that number?

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

Formulate the indicated conclusion in nontechnical terms. be sure to address the original claim. the foundation chair for a hospital claims that the mean number of filled overnight beds is over 523, and she is therefore justified starting a funding campaign to add a wing to the hospital. assuming that a hypothesis test has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.