18 years ago Ivan was 3 times older than his son but now he is only 2 times older. How old is Ivan?

Write a system of equations, with 1 equation describing the cost to bowl at Bowl-O-Rama and the other describing the cost to bowl at Bowling Pinz. For each equation, let x represent the number of games and let y represent the total cost.

Is 2/5 greater than 6/9

Which of the following statements says that a number is between - 5 and 5? |x| > 5 |x| < 5 |x| = 5

The track at East Side High School is 440 yards long. It took Maya 10 minutes to jog around the track 4 times. Find her speed in miles per hour. (What's the formula for this problem?)

6. The heights of men selected from a particular population have a normal distribution with mean 68 inches and standard deviation 4 inches. a. Find the percentage of men in the population who are taller than 72 inches. b.

Tom has twice as many marbles as luke together they have 39 marbles how many marbles does luke have?

Solve : (5m3 + 3mn2) + (-7m2n + mn2 - n3) - (mn2 + 2m3)

There are 52 weeks in 1 year. In the space at the right, make a table and write a function rule relating the number of weeks to the number of years for 1,2,3, and n years. Then find Hana's age in weeks if she is 11 years old.

14d+21 and 7 (2d+3) choose yes or no to see if the expression is equivalent

Layla's class is painting the brick wall behind the basketball court. 39 bricks were already painted, and each student paints 15 more bricks in whatever color he or she wants.