Which expression is a polynomial?

a. 9x^7y^-3z

b. 4x^3-2x^2+5x-6+1/x

c. - 13

d. 13x^-2

The product of a number and 3 plus 1 is 19

The ratio of nonfiction books to fiction books in a library is 105 to 189. Which statement describes this relationship? A) There are 5 nonfiction books for every 9 fiction books in the library.

What is the mode of this data set 14,79,77,11,14,78,77,65,31,56,16

Out of the 150 students at a summer camp, 72 signed up for canoeing. There were 23 students who signed up for trekking and 13 of those students also signed up for canoeing.

Dr. Addams is comparing low, middle, and high socioeconomic status groups on IQ. What is her Independent variable?

Find the value of x 58° 42°

If tan x° = z divided by 10 and cos x° = 10 divided by y, what is the value of sin x°?

Which model is most appropriate for each set. (-3,-1), (-1,1) (0,2) (1,3)

Rami is solving the equation for x. - 6x - 1 = 5 - 6x - 1 1 = (5 1) - 6x = 6 - 6x - 6 = 6 - 6 x = - 1 Which operation symbols should Rami write in the and the?

24 ounces of soap equals how many grams