HELP ASAP PLEASE ..! Arnold is shopping around for a new cell phone provider. He is considering two
different plans. Plan 1 has a monthly fee of $18.50 plus $0.15 per minute. Plan 2 costs
$27 per month with unlimited minutes of talk. Find the number of minutes Arnold would
have to talk to have the same cost under both plans.
A) 50 minutes
B) 56.7 minutes
C) 45.5 minutes
D) 60.3 minutes

What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?

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.