Use the following table to answer questions 5-8. Monthly Cell Phone Bills
May
June July Aug Sept
Jan
Feb
Mar
Apr
Oct
Nov
Dec
X4
X's
Xo
X
Xg
X10
X12
$83
$86
$78
$82
$95
$87
$90
$76
$88
$82
$83
$71
5. Write the formula for the mean cell phone bill for the entire year using sigma notation and
determine that mean. Round your answer to the nearest cent.

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Nikita wants to apply for student aid to fund her college education. arrange the steps involved in nikita’s application for financial aid