A 14 oz tub of Haagen-Dazs ice cream costs $5.04. A 16 oz container of Ben & Jerry’s costs $4.96. Based on the unit price, w
2 answers:
Answer:
Step-by-step explanation:
We are asked to find which ice cream is a better buy. We will compare the unit prices or price per ounce.
The unit price is found by dividing the price by the number of ounces.
1. Haagen - Dazs
This ice cream costs $5.04 for 14 ounces.
2. Ben & Jerry's
This ice cream costs $4.96 for 16 ounces.
$0.31 per ounce is less than $0.36 per ounce, so <u>Ben & Jerry's is the better buy.</u>
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You can get all the terms on one side, and then solve for x by any means:
Factor out a -2:
Factor this equation:
I will use the AC method. To use it, first multiply a and c (in ax^2 + bx +c):
Now, look for two numbers that multiply to -12 and add to -11. Obviously these numbers are -12 and 1. (-12*1 = -12 and -12+1 = -11). Now, because of rules, you set it up in a Punnett square:
4x^2 -12x
x -3
Now, we find common factors of the terms in rows:
_x_______-3__
4x| 4x^2 -12x
1 | x -3
So, you can use this to write an equivalent expression to the quadratic given:
Now, we known the factors are (solve for x): 3 and -1/4.
Factor out a -2:
Factor this equation:
I will use the AC method. To use it, first multiply a and c (in ax^2 + bx +c):
Now, look for two numbers that multiply to -12 and add to -11. Obviously these numbers are -12 and 1. (-12*1 = -12 and -12+1 = -11). Now, because of rules, you set it up in a Punnett square:
4x^2 -12x
x -3
Now, we find common factors of the terms in rows:
_x_______-3__
4x| 4x^2 -12x
1 | x -3
So, you can use this to write an equivalent expression to the quadratic given:
Now, we known the factors are (solve for x): 3 and -1/4.