math pls help!!!!!

these are the few i don't know/im not sure. pls help!

The distance from Newtown to Oldtown on the highway is (6x^2 + 2x – 2) miles. Using the back roads, the distance is (5x^2 – 8x – 6) miles. How many miles shorter is the second route?
A. 11x^2 + 10x - 8
B. -x^2 - 6x + 4
C. x^2 + 10x + 4
D. x^2 - 6x - 8

7^5 • 7^6
A. 49^30
B. 7^30
C. 49^11***
D. 7^11

Find the area of the rectangle.

top: 7x+1
right side: 8x
assuming the other sides are equal...

A. 15x + 1
B. 56x^2 + 8x
C. 56x + 8
D. 15x^2 + 9x

14^-4
A. 1/14^4
B. -56
C. 1/14
D. 1/14^-4

PLS help ASAP!!!!!

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asked by zumai
  1. 1. C
    2. D
    3. B
    4. A

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    posted by Kuai
  2. thank you sooo much Kuai!!:) 100%!

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    posted by zumai
  3. Test for Polynomials and Properties of Exponents Unit Test part 1:
    *pls know that these were the answers for me and may be switched up for others, so no I’m not a “liar”*
    1: c- x^2+16+1
    2: b- -4x^2-x+15
    3: c- 2x^2-x+9
    4: b: -5
    5: b: m^2+2
    6: a: 6x^3+7x^2-x-5
    7: c: 14t+2
    8: a: f8
    9: b: 144^12
    10: c: x^11
    11: a: 4^14
    12: b: 4^48
    13: c: 1
    14: a: 1/27
    15: c: 7.2*10^11
    16: a: 8.5*10^-9
    17: c: 36t^6
    18: c: -12x-15
    19: b: -6k^4-12k^3+21k^2
    20: c: -24x^3
    21: a: 13y^2-11y
    22: not graded yet
    23: not graded yet
    If I remember I will give you 22 and 23

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