During a week in January in Jefferson City, MO, the daily high temperatures were -2˚F, 12˚F, 5˚F, -4˚F, 20˚F, 16˚F, and -12˚F. Which expression can be used to find the difference between the highest temperature and the lowest temperature of the week? A. 20 – 2 B. 20 – (-2) C. 20 – 12 D. 20 – (-12) PLEASE HELP QUICKLY

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?

Find the solution of each of the following.

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?