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					Quiz for 2-7 and 2-8               Name __________________________ # _________

     _____/12 pts                  Date _________________________

Solve. Show your work. BOX your final answer.

  1) x- = -                          4)
                                              = -3




  2) -2k =                                5) s - =




  3) 2h – 3.24 = -1.1                     6) Tickets to an orchestra concert cost
                                             $25.50 apiece plus a $2.50 handling
                                             fee for each order. If Jamal spent
                                             $79, how many tickets did he
                                             purchase?
EXTRA CREDIT: Lucie drank ¾ pint of bottled water. One serving of the
water is 7/8 pint. How much of a serving did Lucie drink?
Answers

  1) -1/8
  2) -1/8
  3) 1.07
  4) -78
  5) 1 13/24
  6) 3 tickets
  7) 6/7
   1) x-       =   -                  4)
       +¼          + ¼ Common Denom             = -3

    x = -3/8 + 2/8                    reverse PEMDAS to “undo”

  x = - 1/8                           multiply both sides by 32

                                      x-18 = -3 * 32

                                      x-18 = -96

                                      add 18 to both sides

                                      x = -78

   3) -2k =                                5) s -       =

  divide both sides by -2                       +2/3        +2/3

 k = ¼ ÷ -2/1                          s= 7/8 + 2/3 find a common denom

 k= ¼ *-½                              s= 21/24 + 16/24

 k = - 1/8                             s= 37/24        reduce

                                       s = 1 13/24

   3) 2h – 3.24 = -1.1                     7) Tickets to an orchestra concert cost
         + 3.24   +3.24                       $25.50 apiece plus a $2.50 handling
                                              fee for each order. If Jamal spent
   2h = 2.14                                  $79, how many tickets did he
                                              purchase?
divide both sides by 2
                                      T= number of tickets
h= 1.07
                                      25.50T + 2.5 = 79

                                      subtract 2.5 from both sides
                                      divide by 25.50

                                      T=3; 3 tickets
EXTRA CREDIT: Lucie drank ¾ pint of bottled water. One serving of the
water is 7/8 pint. How much of a serving did Lucie drink?


1 serving = 7/8 of a pint


              1      2       3         4        5        6         7



She drank ¾ of a pint




1/7 is left

SHE DRANK 6/7ths

				
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posted:3/23/2013
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