(-5x^2+2x+6)-(9x^2+2x+9)+(-6x^2+5x- 3) simplified

Fatima plans to spend at least $15 and at most $20 dollars on sketch pads and pencils. if she buys 2 sketchpads, how many pemcils can she buy while staying in her price range? fatima can buy between and pencils. ? (type whole numbers. use ascending? order.)

What are the solutions of the following system? y=-2x^2 y=x-2

Sioux co. replaced the roof on its existing building, therefore increasing the building's life by 10 years. the cost of the roof is considered a(n):