What is the product of (ax)(0) sorry for asking stupid questions ..im just really stupid at algebra

Solve 2x2 + 8 = 0 by graphing the related function. there are two solutions: . there are no real number solutions. there are two solutions: 2 and -2

At 6 1/2 cents per pound of string beans how much does 7 pounds cost

Sally deposited money into a savings account paying 4% simple interest per year.the first year,she earned $75 in interest.how much interest will she earn during the following year?