Which of the following is a situation in which an equation cannot be solved using the quadratic formula? a.) the coefficient of the x^2 term is zero b.) the right hand side of the equation is zero c.) the coefficient of the x term is zero d.) the degree of the polynomial is 2

Recall that the quadratic formula is
x=(-b+/-sqrt(b^2-4ac)/2a
So the formula cannot be used whenever a=0, in other words, the coefficient of the x^2 term is zero.  All other situations do not render the formula inapplicable.

Answer for 2: his profit would be $2.88 explanation: you have to first multiply 72 and 0.12 together to get $8.64 once you do that you know how much money the shopkeeper made from selling the candy bars individually. so you have to do 8.64-5.76=2.88 hope that ; )answer for 3: yeah i’m sorry i have no idea what number 3 is. i’m sorry i couldn’t with that.