1) 2m + 3m2 - 4m 7) 3m2 – 2m + 4m
2) 2x + x - 4y
8) 20 + 109 + 39 - 4
3) 2m + 4m - 3m2
9) 4xy + x + 2xy
4) 2y + 14x - 7x + 9y
10) 6m2 - 6m - 9m2

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.

Which graph shows the solution set of x^2+4-12x/> 0

The coverage of a base station of a telecommunication company forms a disk with a radius of (kilometers). let be the distance of a cellphone from a base station. assume that the location of cellphones in use are randomly uniformly distributed within the disk. calculate the mean and variance for the random variable.