The manager of a dress shop recorded the number of dresses sold during the week the data is as follows

17 15 16 20 15 19

Find the mean deviation for this data

4.98

1.67

2.21

1.91

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Which shows a reasonable estimation for 124% of 42 using the distributive property?