Simplify the expression, Please help!!1. -x(7x - 8)

A: 6x^2 - 9x
B: -7x - 8x
C: -7x^2 + 8x
D: 7x + 8x

2. 3k^3(-2k^2 - 4k + 7)

A: -6k^3 - k + 10k
B: -6k^4 - 12k^3 + 21k^2
C: k^4 - k^3 + 10k2
D: 6k^4 - 12k^3 + 10k^2

3. (2k + 1) (k - 4)

A: 2k^2 - 7k + 4
B: 2k^2 - 3k + 4
C: 2k^2 + 9k + 4
D: 2k^2 - 7k - 4

4. (-2y + 5) (y + 3)

A: -2y^2 + 8y + 15
B: -2y^2 - y + 15
C: 2y^2 + 8y + 8
D: 2y^2 - y + 8

What is the mathematical name for a can of soup.

Sam has a phone card that charges $1 to connect and $0.50 per minute. He also uses a cell phone that charges $3 to connect and $0.25 per minute. In how many minutes will calls made using the phone card and the cell phone cost the same?

10. This model shows the area of a garden. Write two expressions thatrepresent the area.
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Leons older brother is 4 3/4 feet tall. Leon is 1/3 foot shorter than his brother. How tall is leon?

Sylvan withdrew 2/5 of the amount in his savings account, and spent 7/10 of that money.  What fraction of his total savings does he still have?

A line has a slope of -1/2 and a y-intercept of 3.Which equations represent the line?

Choose all answers that are correct.

A. 2y = 6 + x


B. x + 2y = 6


C. y = -1/2x + 3


D. (y - 2) = -1/2( x - 2 )