42-20=22 ---- I'm pretty sure that's the answer you're looking for.
The rockets rate of change in miles per second is:
(5 - 1)/(2.5*60 - 30) = 1/30 miler per second or 0.033
the rockets rate of change in miles per minute is:
(5 - 1)/(2.5 - 30/60) = 2 miles per minute
Answer:
It will cost the school $60
Step-by-step explanation:
In order to find this, set up a proportion.
$18/15 dozen = $x/50 dozen
Now cross multiply to solve
50 * 18 = 15 * x
900 = 15x
60 = x
Your answers are:
1.(-1,-5)
2.(4,2)
