Answer:
Step-by-step explanation:
Cross multiplication can be used but not in the beginning. First x should be isolated.
Now subtract 
from both sides
In this stage, cross multiplication can be used.
The correct answer is B.
+ 15 represents the 15 miles she already ran.
30x represents the amount of miles she will need to run each day (because there are 31 days in January, and 1 of them has already been accounted for.
Answer:
(4,4), (10,4), (10,10), (4,10)
Step-by-step explanation:
(2,2) x2 -> (4,4)
(5,2) x2 -> (10,4)
(5,5) x2 -> (10,10)
(2,5) x2 -> (4,10)
Hope that helps!
19200 all you have to do to figure this out is multiply 100 times 8 since the is 8 halfs in 4 hours.
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Use the equation(s)
392 x 20% OR 392 x 0.20
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392 x 20% = 78.4
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78.4 is your answer
