April 21, 2014

Homework Help: algebra

Posted by nancy on Sunday, March 31, 2013 at 8:30pm.

y= -x^2-12x+28
A painter can use the formula A=2/3bh to estimate the area of space under the parabola.
Calculate area in square ft under each arch

~ if there are 8 arches to be painted how many square ft must be painted
~ if 1 gallon paints 200 square ft , how many gallons must be needed
~ if a gallon of paint cost $27.00 and sales tax is 8% how much will it cost topaint 8 arches

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