Sammy went to the candy store on Monday, bought 12 ounces of candy, and saw that the total was $7.80. Sammy went again to the store on Wednesday, bought 9 ounces of candy, and saw that the total was $5.85. Write an equation for the cost of candy using function notation:f(x). Find the average cost of one ounce of candy.

Average cost per ounce is $0.65

Step-by-step explanation:

My Notes:

Monday - 12 Oz. = $7.80

Wednesday - 9 Oz. = $5.85

Find the average cost per 1 Oz. per candy.

The AVERAGE cost per ounce is $0.65.

both equations and proportions are better.

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