What is the product? 3 •[1 -4
-4 5
5 -7]
-1 8 4
o [3 -12 15 -21] ]
o [4
[3 12 15 21
o [4 -12
-12 8 -21]
o [3

answer: b

step-by-step explanation:

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  

.

wait this depends wether emily and zach how they are thinking.

yes they are the same.