Raphael is twice as old as his sister. The sum of their ages is less than 30. What is the greatest age Raphael sister can be?

A. 20 years old

B. 15 years old

C. 9 years old

D. 10 years old

12 out of 18 students buy pizza for lunch on Fridays. At this rate if there are 240 students in the entire school, how many students can be expected to buy pizza for lunch this Friday?

What is the first step in solving this system of equations? 2x - 5y = 7 3x + 7y = - 3 A. Multiply the first equation by 7 and the second by 2. B. Multiply the first equation by 3 and the second equation by - 2. C. Add the equations together. D.

A new surgery is successful 85% of the time. If the results of 6 such surgeries are randomly sampled, what is the probability that fewer than 4 of them are successful

Does any body know 2v+7=3

In a town, 150 people need 800 filters of water to drink everyday. At a festival time how many liters of water do they need to drink with their 75 guests?

How many dimes are in 290 pennies

Brad is 49 years old and has his retirement savings in a 401 (k). If he makes $82,500 annually, what is the maximum percentage of his income that he can contribute to his 401 (k) plan per year? (The current maximum contribution limit is $16,500.)

325 meters in 28 seconds. Round to the nearest hundredth

What does the line x = 7 look like

Write an equation and solve. Four times the sum of three times a number increased by two is equal to three times the difference of two times the number decreased by eight. What is the number?