You want to buy from a vending machine a candy bar that costs 55¢. The EXACT CHANGE light is on and you have only a $1 bill. You ask the cashier make change for your $1 bill so you will get 55¢ as part of the change. In how many ways can the cashier change your $1 bill so you will have the 55¢ you need to buy the candy bar?

the answer is 15% decrease

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

no because after the troops were pulled many blacks were killed by hangings lynchings and other cruel ways which in a way interrupted the reconstruction of the south and differed from the way abraham lincoln had an idea of reconstruction