Safeway has ginger ale on sale at 12 cans for $4.00 and Giant has the same brand of ginger ale on sale for 20 cans for $6.00. Which store has the better deal?

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.