Mathematics, 21.12.2020 17:20 keke6361
32 Erica is training for a marathon. This week she ran 6 less than 2 times the number of miles that
she ran last week. In these two weeks she ran a total of 42 miles. Which system of equations can
be used to find x, the number of miles she ran this week and y, the number of miles she ran last
week?
A.
В.
X+ y = 42
y=21-6
I + y = 42
C.
x=2r+6
D.
X=2y-6
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