James gets $6 for his weekly allowance and spends $4 of it. His brother Mike gets $7 for his weekly allowance and spends $3 of i
t. Their mother's birthday is in 4 weeks. If they spend the same amount each week, how much money can they save together in that time to buy her present? 2 points
A. lxl=7 x=7 x=-7 (Take two cases, one as the others side negative and the other as positive) B. l2xl=32 2x=32 2x=-32 x=16 x=-16 C. lx+7l=10 x+7=10 x+7=-10 x=3 x=-17 D. lxl=53.1 x=53.1 x=-53.1