Question 589627
1. Tim wants to buy an AC. The AC costs $45. It costs $2 a day for electricity to run the AC. 
Write an expression for D days to run the AC.
 2d + 45
 If Time spent $85 to cool with the AC, how many days did he run it?
2d + 45 = 85
2d = 85-45
2d = 40 
d = 20 days
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2. Tammy wants to rent a movie,membership is $15 and it costs $4 per movie. Write an expression to find the cost to rent the V videos.
 4V + 15
 If Tammy spent $103 at the video store, how many videos did she rent?
4V + 15 = 103
solve for V the same way we did above
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3. Sam wants to buy a cell phone. He has $45 now and can save $6 a month.
 Write an expression to show how much savings he will have after M months.
6M + 45
 If Sam wants to buy a phone for $63, how many months will it take him to save for it?
6M + 45 = 63
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4. Sarah bought a membership for some training sessions. The membership costs $12 a month + $10 for each training session.
 Write an expression to show the cost for S number of sessions.
 10S + 12
If Sarah spent $62 in March for training sessions, how many did she buy?
10s + 12 = 62
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5. Betty wants to mail a package. The flat rate is $4 per package + $2 per oz.
 Write an expression to determine the cost for the package that weighs U oz.
 2U + 4
 If Betty spent $88 to mail her package, how many oz did the package weigh? 
2U + 4 = 88
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You have to admit these are not that hard.  Hope your head-ache is better today.