Hopes this help you out :)
Divide cost by ounces. The lowest cost per ounce is the better buy.
2.88/8 = 0.36
4.56/12 = 0.38
9.10/26 = 0.35
The 26 ounce package is the better buy.
You have to solve 3 equations pretty much simultaneously here using the x and y values in the general form of the quadratic equation
Start with the first values of x=0 and y=5.1 to solve for c:
so c = 5.1
Next use the second x and y values along with the value of c in the next equation:
gives you
-2.07 = a + b. Solve this for a:
a = -2.07 - b
Finally use the third set of numbers with the c value AND the subbed value for a:
1.17 = 9(-2.07 - b)+ 3b + 5.1 which simplifies to:
1.17 = -18.63 - 9b + 3b + 5.1 which further simplifies to:
14.7 = -6b and b = -2.45
Now you have c and b, let's find a using one of the simplified equations:
-2.07 = a + b
-2.07 = a - 2.45
a = .38
So here's your equation:
Answer:
8.D
9.A
Step-by-step explanation:
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Hello,
Answer C: II,IV,I,IIIbut IV,II,I,III is also a possible answer not listed.