Mary collects dolls. She has 4 dolls more then her friend Penney. Mary says if she tripled the number of dolls she has, she would have 27 dolls. How many dolls does Penney have?

What is 3 2/5 - 1 4/5

Solve for the variable - 3x 4 > 5

Convert 135 pounds to kilograms.

Mei is evaluating an expression using absolute value. Find her mistake and correct it.

Tatiana ran the marathon with an average speed of 0.09 miles per minute. What was her speed to the nearest mile per hour? 5 miles per hour 7 miles per hour 9 miles per hour 11 miles per hour

Which of the following is an example of an equation? 2m + 1 x + 7 9 - X + 7 X-8 = 12

Solve the equation. - 5x + 2 = 67 A) x = 13 B) x = - 13 C) x = 69 / 5 D) x = - 69/5

Mr. Li has a bag of Skittles. There are 5 blue Skittles, 3 red Skittles, and 12 yellow Skittles. What is the probability of pulling out a blue Skittle? Express your answer as a simplified fraction. BONUS: What is your answer as a percent?

Sarah and Emmaree put on just dance. After school. When they started, it was 4:45pm and they danced until 5:30pm how many degrees does the minute hand turn by the time they stop dancing?

A gigameter is 1.0*10^16 kilometers. How many square kilometers are in 5 square gigameters? Write your answer in scientific notation.