No solutions beacause you have to factor out numbers for -9 but they must equal -8 when adding them.
Answer:
30 hours
Step-by-step explanation:
The equation we use is 1/15 + 1/x = 1/10. X being the amount of time it takes Ian alone. X works out to 30 hours which is the answer
Answer:
(x+3)(x+2)
Step-by-step explanation:
I can't explain it well, but I call it "reverse foil."
Answer:
$5 each teenager
Step-by-step explanation:
divide 75 by 15
