The answer is negative four. subtract six from both sides and you get -20=5x then you would divide both sides by 5 and get -4
Answer:
A: Store A will cost about $1.28 less
Step-by-step explanation:
Okay, let's find the unit rate of cost. To find that for store A, we divide 7.26 by 3, which gets us 2.42. For store B, we need to look for the first intersection. We find that at (20, 50). Let's divide 50 by 20. That gets us 2.50. Let's multiply 2.42 and 2.50 by 16. That gets us 38.72 for store A and 40 for store B. Let's subtract 38.72 from 40. That gets us 1.28. That means store A costs $1.28 less than store B. That makes our answer A.
I don't know if this is correct..
warning: I may be wrong
so you have to do a proportion..
it's easy!
x1/y1 = x2/y2
so, plug in the values!
12/8 = x/12
now solve for x.
cross multiply:
8x = 144
divide by 8:
x = 18
there!
7 28 492 8 14Working out: 2 + 6 = 8 , 8 + 6 = 14 To check: 7/2 = 3.5 & 49/14 = 3.58 x 3.5 = 28 To check: 28/8 = 3.5
