Question 10.2 two mechanics worked on a car. the first mechanic charged $ 95 per hour, and the second mechanic charged $ 75 per hour. the mechanics worked for a combined total of 20 hours, and together they charged a total of $ 1800 . how long did each mechanic work?

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

Charlie tosses five coins.what is the probability that all five coins will land tails up.