Which two numbers are 4 units away from -1

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

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?

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?