How old was Lisa x years ago if she is now 13?

Which expression represents this?

x + 13

x - 13

13 - x

Which term refers to a statistical value that is a measure of the spread or variation in the scores in a given data set? A. Dispersion B. Independent Variable C. Dependent Variable D. Central Tendency

At a certain high school, 35 students play only stringed instruments, 10 students play only brass instruments, and 5 students play both. There are also 5 students who play neither stringed nor brass instruments.

643=4x160+n write what n represents in the division problem

What was your speed if you drove 325 miles in 5 1/4 hours?

Solve for the unknown: g - 24 = 75

A manager purchased a total of 21 coffee mugs and key chains. Each coffee mug cost $8.50, and each key chain cost $2.75. If the manager spent a total of $132.50, how many coffee mugs did the manager purchase?

Find the quotient - 72/-12=

Luke lives 0.4 kilometer from a skating rink mark lives 0.25 kilometer from the skating rink who lives closer

At a concession stand, three hot dogs and 4 hamburgers cost $11.50 ; 4 hot dogs and three hamburgers cost $11.25 Find the cost of one hot dog and the cost of one hamburger. What is the cost of one hot dog ?

Any number that can be written as a fraction is?