Question

Jill took five courses this semster, each for four credit hours. she recieved a 13 (3 points) a B + (3.5 points), an A (4 points), and a B + (3.5 points) in four of the course. If her GPA is 3.2, what was her grade in the fifth course?'

Answer 1

You are averaging 5 numbers: 3, 3.5, 4, 3.5, and x. The average is the sum of the 5 numbers, divided by the number of numbers (5), and equals 3.2. What is the value of \(x\) that makes that true?

\[3.2 = \frac{3+3.5+4+3.5+x}{5}\]Solve for \(x\). I would start by multiplying both sides of the equation by 5.

Answer 2

ok thanks now i need help on one more problem,

Answer 3

\[B\cap C\] is all of the items which appear in both B and C

\[A\cup(B\cap C)\] is all of the items which appear in both B and C, plus any items which appear in A

Answer 4

thanks so very much you are a life saver,