Richard is 15 and sheila ie 10. put the equations :r=s+5 and 4s+3=3r-2 and then solve
Answer:

Step-by-step explanation:
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Answer:
80 sacks for $959.2
Step-by-step explanation:
2 tons = 4000 lbs.
If each sack cost $11.99, and is weighted at 50 pounds than
4000/50 = 80
80 x $11.99 = $959.2
12 sessions.
EXPLANATION:
each session is 1 3/4 hours.
We need enough sessions for 21 hours.
the equation is 1 3/4 x f = 21
using the multiplication property of equality, we can do 21 divided by 1 3/4
The answer is 12 sessions.
Hope it helps!
I think the answer is a I'm not sure