Appliance Ann charges $20 for a service call plus $25 for each hour it takes to repair the broken appliance. How many hours can Ann work on the stove if you want to spend less than $80? (Ann charges the full hour rate for any partial hours she works)

Write the expression as a constant , a single trigonometric function, or a power of a trigonometric function. sin x cos x/ tan x

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.