Question

I need help on the problem below. The instructions say to "factor the expression" and the expression is:
-.2x^2 + 80x -6000.

Thanks
rbowh
WOW! This looks like algebra, not 6th grade.
Anonymous
The rectangular backyard is 100 feet by 80 feet, and the patio is 13 feet by 8 feet. What is the area of the backyard that is planted with grass?

jack
38kg 4g divide by 12

ddddddd
it is
kayla
i can't figure out this problem 12 and 1/2 as a percentage... i need help