2. Green Grass, Inc. charges an initial fee of $15 plus $10 per hour for lawn services. Their main competitor, S & G Lawn Care, charges an
initial fee of $35 plus $7 per hour.
a. When would the charges for each company be equal?
b. Explain two different methods that could be used to determine
when it would be better to use Green Grass, Inc. and when it
would be better to use their competitor, S & G Lawn Care.

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.