Which of the following are monomials?

check all that apply.

a. 20x11
b. 99
c. x + 9
d. 112 - 9
e. 11x - y
f. x9

For [tex]f(x) = 4x+1[/tex] and [tex]g(x) = x^{2} -5[/tex] find [tex](f[/tex] ° [tex]g)[/tex][tex](4)[/tex]

Big boi and travis scott are performing at the super bowl. travis scott is 62 years younger than twice big boi’s age. the sum of their ages is 70 years old. use b to represent big boi’s age. write and solve an equation.

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.