SOLUTION: (1) Using d=rt, find r if d=350 miles and t=5 hours. (2)Five less than twice the temperature is 21F, find the temperture. (3) Three times Jan's salary is the same as her sal

Question 469382: (1) Using d=rt, find r if d=350 miles and t=5 hours.

(2)Five less than twice the temperature is 21F, find the temperture.
(3) Three times Jan's salary is the same as her salary increasedby $110.
(4) If 4 times a number is decreased by 9 and then increased by 12, the result is 5 less than 2 times the number. Find the number
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
350=5r
350/5=r
70 mph=r
--------------------
2f-5=21
2f=26
f=13 degrees fahrenheit.
------------------
3s=s+110
2s=110
s=55
Jan's salary is $55..
----------------
4n-9+12=2n-5
4n+3=2n-5
2n=-8
n=-4
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