This is a standard deviation contest. Which of the following sets of four numbers has the smallest possible standard deviation?

A. 7, 8, 9, 10

B. 5, 5, 5, 5

C. 0, 0, 10, 10

D. 0, 1, 2, 3

How many is 2/3 of 12?

Mrs. Salas drives 115 miles per week to give 9 voice lessons. She deducts the cost of eight gallons of gasoline at $2 per gallon from her profit. Mrs. Salas charges $35 for each voice lesson. What is her profit for one week?

Is 85/95 greater than 64/76

Identify the domain and range of each situation using words and inequalities. Victoria recently switched to a new electric company. If she uses between 0 and 400 kilowatt-hours (kWh) of electricity per month, the cost is a set price of $30.

Domain and range of f (x) = - 5x + 4

The square of 9 less than a number is 3 less than the number. What is the number? a) - 12 or 7 b) - 12 or - 7 c) - 7 or 12 d) 7 or 12

Write an algebraic expression for " the minimum value of 2x + 1 is 13"

The Frostburg-Truth bus travels from Frostburg Mall through the city's center to Sojourner Truth Park. The mall is 5 miles west and 4 miles south of the city's center. Truth Park is 5 miles east and 2 miles north of the city's center.

The area of a rectangle is 50 yd2 , and the length of the rectangle is 5 yd less than three times the width. Find the dimensions of the rectangle.

What is the gcf 12x^5 8x^3