A man starts out on a trip driving his car at a constant rate of 48 mph. A man riding a motorcycle starts out on the same route 112
1
2
hours later, traveling at a constant rate of 64 mph. How long will the car have been traveling when the motorcycle catches up?

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

Two numbers have a sum of -19. one number is x. what expression represents the other number?