Urgent Math please check
posted by Brittany on .
Very Important I can get someone to check these for me... I have to get an A, and I was wondering if someone could double check these for me. I am about 95% sure they are right, but just need a fresh set of eyes. I know I've been sending alot, but I really need them to be double checked. Thanks so much!! :)
1. Simplify 2e^2+9e+3+3e^25e2.
A. 5e^2+4e+1
B. e^2+4e+5
C. 5e^2+14e+1
D. e^2+14e+5
My answer was A. 5e^2+4e+1
2. Find the degree of 1+2x^4+2x^2
A. 4
B. 3
C. 1
D. 2
My answer was A. 4.
3. Find the degree of 7x+2
A. 4
B. 3
C. 2
D. 1
My answer was D. 1.
4. Write the variable expression. It is 4 black squares,4 skinny white rectangles, and 19 little white squares.
A. 4x^2+4x+19
B. 4x^24x19
C. 4x^24x+19
D. 4x^2+4x+19
My answer was D. 4x^2+4x+19
5. Simplify 4q^25q18q^2+8q9
A. 4q^2+3q+8
B. 12q^2+3q10
C. 12q^213q10
D. 4q^213q+8
My answer was B. 12q^2+3q10
6. Subtract (7x5y)  (2x+4y)
A. 9x9y
B. 9xy
C. 5x9y
D. xy
My answer was C. 5x9y
7. Add (6x+2y) + (3x4y)
A. 3x2y
B. 3x+6y
C. 9x2y
D. 9x2y
My answer was C. 9x2y
8. Add (4x2y) + (7x5y)
A. 11x+3y
B. 11x7y
C. 3x+3y
D. 3x7y
My answer was B. 11x7y
9. Subtract (4x^5 5x)  (7x58x^5)
A. 4x^5 12x+5
B. 12x^5+12x+5
C. 11x^5 13x5
D. 13x^5 +2x5
My answer was A. 4x^5 12x+5
10. Subtract (4x+2y)  (8x3y)
A. 4xy
B. 12xy
C. 12x+5y
D. 4x+5y
My answer was D. 4x+5y
11. Simplify 5x^4(7x+5)
A. 35x^4+5
B. 12x^5+25x^4
C. 12x^2+10x
D. 35x^5+25x^4
My answer was 35x^5+25x^4
12. What multiplication expression is shown by the model? It has two columns down, 2 big squares down and three below that. So its 10 squares all together.
A. 2x(2x+3)
B. 3x(2x+3)
C. x(x+6)
D. (x+3)(x+2)
My answer was A. 2x(2x+3). This one
I am 100% sure on, but still.
13. Simplify x^6 times x^4
A. x^10
B. x^24
C. 2x^24
D. 2x^10
My answer was A. x^10
14. Simplify 4x(2x^4+2)
A. 8x^42
B. 2x^5+8x
C. 2^46x
D. 8x^58x
My answer was D. 8x^58x
15. Find the area of the figure. The length is 4x^2+2x and the width is 3x.
A. 7x^3+5x^2
B. 4x^2+5x
C.10x^2
D. 12x^3+6x^2
My answer was D. 12x^3+6x^2

1, 2, 3. Correct
Don't know about 4.
5. It seems like you might have a typo. I get
4q^2+3q10
6, 7. Correct
8. Typo? I get 3x7y.
9, 10, 11. Correct
12. Don't have model.
13, 14, 15. Correct.