Help please

Find the zeros for
y=(x-2)(x+7)

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table

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.