John's checkbook had a balance of $432.05 on June 10th On June 12th he wrote a check for $123.87 at the grocery store. On June 16th, he wrote a check for $250.75 for his car
payment. Four days later, his mother sent him a check for $300.00 and he deposited this
in his account.
What is the balance of John's account after this deposit?
A $57.43
B. $187.00
C. $308.18
D. $357.43

For what value of x does 4x = (1/8) x + 5?

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis.how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

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.