Jeff has two sticker-printing machines. Each machine can print 42 stickers per minute. On day 1, only the first machine was used, and it printed 89 stickers. On the following day, the first machine printed for x minutes and the second machine printed for y minutes
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OpenStudy (moneybaby980):
Which expression shows the total number of stickers printed by both machines during these two days?
131x + 42y
42 + 89x + y
89 + 42x + 42y
89x + 84y
OpenStudy (moneybaby980):
help me
Mehek (mehek14):
ok 42 per minute
that tells us 42x
OpenStudy (moneybaby980):
so B
Mehek (mehek14):
no wait
the variable x is used for the first machine
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Mehek (mehek14):
and it says both can print 42 per minute
OpenStudy (moneybaby980):
so what do I do
Mehek (mehek14):
the first machine printed 89 the first day and we know 42 per minute
Mehek (mehek14):
so no variable for that
Mehek (mehek14):
leave 89 by itself
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OpenStudy (moneybaby980):
ok
Mehek (mehek14):
machine one: 42x
machine two: 42y
they print the same amount but have different variables for the different machines