Organize the following expressions from greatest to least by number of terms: I. x + 2xyz
II. 9x2yz
III. 18x2 + 5ab − 6y
IV. 4x3 + 3x2 − x − 4
a
III, IV, I, II
b
IV, I, II, III
c
IV, III, I, II
d
III, II, IV, I

What is the lcm of 16 and 40 ? 24 and 40 ?

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?