Thais goes to the store and buys 23 muffins that cost 3 dollars each. She then buys 12 cakes that cost 18 dollars each. How much did she spendo cakes?

Steve is scuba diving near his home in maui. at one point he is 100 feet below the surface. represent this number with a negative number. if he descends another 5 feet, what negative number will represents his.

The graph shows the distance kerri drives on a trip. what is kerri's speed?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.