Use the difference of squares theorem to find the solution of the following equation: v^2 = 252

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)