1. If scores on an exam are normally distributed with a mean of 80% and a standard deviation of 10%, what would a score of 90% be in Z-scores (e. g., how many standard deviations is this score above or below the mean) ?

Such is biger 4/8 or 4/6

4p + 1 > - 7 or 6p + 3 < 33?

Jake is earning money for a new TV. So far, he has put $54.29, $87.20, and $21.44 into his savings account. How much money has Jake saved?

X^2=4^2+4^2 Pythagorean theorem

Evaluate the function for x=4 F (x) = x^3+2x^2+1

Which amount of tickets offers the best deal? Ticket Booth: a.) 1 ticket for. 50 cents b.) 12 tickets for $5.00 c.) 25 tickets for $10.00 d.) 50 tickets for $25.00

A rental car service charges $25 to rent a car, plus $2 per mile. If x represents the number of miles driven, then the expression for the total cost to rent the car is 2x + 25. Which table shows the total cost to rent a car?

What is 8,800 - 3,300

A pool service charges $40 per year for chemicals plus $70 per month for pool care. A second pool service's charges are shown in the table below. Number of Months (x) : 2, 3, 6, 8. Total Charge (y) : $190, $255, $450, $580.

What is the area of a rectangle with the length of 91 inches and a width of 45 inches?