What is the measure of the number of unit squares needed to cover a flat surface - area or perimeter?

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

Simplify -4z+2y-y+-18z a.-22z+y b.-14z+2 c.3y+22z d.y +14z