Which of the following equations demonstrate the set of polynomials is not closed under the certain operation? A. Addition: (x2 + x) + (x + 1) = x2 + 2x+1
B. Multiplication: (x2 - 5x+3)(x - 5) - W - 10x2 +28x-15
C. Division: (x - 5x+3) - (x - 2) = x-3+ ---
D. Subtraction: (3x* + **)-(-2x*+x") = 5x*

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?

2pointswhich of the following appear in the diagram below? check all that apply.d a. zcdeов. сеo c. aéo d. zdce