Slide 2:
EX 2x – 3 = 7 +3 +3 2x = 10 2 2 x = 5
Slide 3:
EX 4 · · 4 -6 -6 x = 48
Slide 4:
EX 6x – 3x = 15 3x = 15 3 3 x = 5
Slide 5:
EX One cell phone plan costs $39.95 per month. The first 500 minutes are free. Each additional minute costs $ .35. For a bill of $69.70, how many minutes over the 500 were used? $39.95 plus $.35 per minute is $69.70 Let m = the number of minutes used over 500 $39.95 + $.35m = $69.70 -$39.95 -$39.95 $.35m = $29.75 .35 .35 m = 85 85 minutes over the 500 were used.