math pls help!!!!!

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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!!!!!

  • math pls help!!!!! -

    1. C
    2. D
    3. B
    4. A

  • math pls help!!!!! -

    thank you sooo much Kuai!!:) 100%!

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