R and S are similar rectangles. The scale factor of R to S is 9:2. What is the ratio of the Areas? A. 2 : 9
B. 9 : 2
C. 4 : 81
B. 81 : 4

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

What are “like terms”? why can we only add like terms?