Which of the following are polynomial functions?
Check all that apply.
A. F(x) = (3/5)x^4 - 18x^3 + x^2 - 10x + 3.5 B. F(x) = 2x^2 + 5x -3
C. F(X) = -x^3 + 5x^2 + 7x - 1
D. F(X) = -x^3 + square root of -x
E. Fx) = 3x^-3 - 19

yes

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation:

triangle and cube

step-by-step explanation: