Which pair of lines are perpendicular?
A) 8x - 4y = 24; Y=-2x+7
B) = 3v = 15; y = 3x+4
C) 21 - 5y = 5; 5x - 2=4
D) x + y = 10; x-y=3
E) 5x-y=1;y=1/5x+9

6e14 is the answer.

a.for lorena 14 hours makes $126   for 16 hours she makes 144

for julie 6 hours makes $72 for 21 hours its $252

b. julie makes more money than lorena julie makes $12 an hour and lorena makes $9  

.

93-8=85

855=17

17*4=68

there are 68 purple marbles in that bag

3/8