When Ethan stands on a box, he is 10 feet tall. If the box is 4 feet tall, how tall is Ethan?, r-4 = 10, 4 + r =10, 10r = 4, 4r=10, A store is selling blank CD's in packages of 5 for $20. What is the cost of one blank CD?, 5r=20, r =20(5), 20=r + 5, 20r=5, The speed limit in front of Scotia Middle School is 25 miles per hour. This is half the speed of Route 50. What is the speed of route 50?, 25/2= r, r + 25= 50, 25-2=r, r/2 = 25, Mr. Mortensen scored 8 points in his second game. This made his total score 39. How many points did he score in the first round?, r-8=39, 8-r=39, r + 8 =39, 39= r(8), Isaac has a total of $10. This is twice the amount that Cole has. How much money does Cole have?, 2r=10, 10r=2, 2+10=r, r=10+2, There is a total of 10 pages of homework. Leona worked on some pages on Monday. If she has 3 pages left, how many pages did Leona work on Monday?, 3=r+10, 10-r=3, r=10+3, 10r=3, A grocery store sold 80 boxes of cookies last week. Of those, 12 boxes were chocolate chip. The remaining boxes were oatmeal raisin. Which equation can be used to solve for r, the number of boxes of oatmeal raisin cookies sold last week?, 12 + r =80, 80r= 12, 12/r=80, 12-4=r, Evan earns $6.25 an hour mowing lawns. Which equation represents Evan’s total money earned, m, related to his hours worked, h?, h=6.25m, 6.25+ m = h, m=6.25h, h = 6.25/2, Team B scores 4 times as many points as Team A. Which equation represents the relationship between the number of points each team scores?, b=4a, a=4+b, b=4/a, a=4-b, Mr. Swain and Mr. Mortensen rent a bounce house to play in together. The rental fee was $20 plus $2 per hour of use. They paid $26 for an afternoon of bouncing. Which equation could be used to determine the number of hours, they bounced?, 2(20)= h, 20+ 2h=26, 2 +h=26, 26=2/h +20

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