Answer:
1.75 pounds costing 10.85 is better buy as it is cheaper at 6.2 per pound
Step-by-step explanation:
1.37 pounds cost 9.59
that is 1 pound = 9.59/1.37
= 7
for 1.75 pounds costing 10.85
1 pounds = 10.85/1.75
= 6.2
Therefore at this cost prices, 1.7 pounds costing 10.85 is better as it is cheaper
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Answer:
D. (2, -3/4)
Step-by-step explanation:
Using the substitution method:
-5x+4(1/8x-1)=-13
-5x+0.5x-4=-13
-4.5x/4.5=-9/4.5
-x=-2
x=2
You are supposed to replace 2 in the first equation now but as there is no other option with x value of 2 D is the answer.
If continued:
-5(2)+4y=-13
-10+4y=-13
4y=-3
y=-3/4