If the mean salary is $50,000 and the standard deviation is $3,200, what is the salary range of the middle 70 % of the workforce if the salaries are normally distributed?

Which expression is equivalent to 7w - 7z + 4w - 5z?

Find solutions by completing the square x^2-6x=7

Mrs. Aviles is planning a fruit-cup party for a class of 18 students and two teachers. The delivery charge is $10 and fruit cups cost $3 each. What is the range of the function?

How are Regrouping and partial product alike and different

Mark made 7 withdrawals of $75 each from her bank account. What was the overall change in her account?

Simplify this exponent 10^-15

A job pays a salary of $8.50 an hour for the first year and $8.85 an hour for the second year. The hourly salary for year n follows an arithmetic sequence. Part A: Write a recursive rule for the hourly salary.

What is the sum of 667 and 23

Selena has hiked 2 1/2 miles in 2 hours she still has 3 3/4 miles to go about how much longer will it take her to finish the hike using the same pace

Solve the system of 2x-5y+z=1 3 y+2z=5-24z=48