The Grinch sneaks into a room with 6 Christmas presents to 6 different people. He proceeds to switch the name-labels on the presents. How many ways could he do this if: a. No present is allowed to end up with ts original label? Explain what each term in your answer
b. Exactly 2 presents keep their original labels? Explain
c. Exactly 5 presents keep their original labels? Explain represents

Type the correct answer in each box. use numerals instead of words. if necessary, use / fir the fraction bar(s). the graph represents the piecewise function: h

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?

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.