Answer:
A is not 3, 7
Step-by-step explanation:because it isint
The standard form is 3x+4y=8
Answer:
4th answer aka the last one
Step-by-step explanation:
Sally paints at a rate of 1/7th room / hour
Steve paints at a rate of 1/6th room / hour
If they both painted together, they would paint 1/7 + 1/6 = 13/42 room/hour
so to paint the whole room, it would take 1/(13/42) = 42/13 =
<u>
3.23 hours (3 significant figures)</u>
Answer D
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