1. Classify the polynomial 5x^2+9x+1 according to its degree. A. linear
B. cubic
C. quintic
D. quadratic

2. Which polynomial is written in standard form?
A. -5x^3+2x+9x^2
B. 2x+9x^2-5x^3
C. 9x^2+2x-5x^3
D. -5x^3+9x^2+2x

3. Simplify 3√x^6y^9 . All variables represent nonnegative numbers.
A. x^2y^3
B. 2x ⋅ 3y
C. x^1/2 y^1/3
D. x^5

Answer fast please in class right now and im willing to give 70 points. Please don't take the points for free

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240