Question

Anyone know how to do these?​

Answer 1

15) g=-1 Answer: B) -1

0.4(2-g)=0.2(g+7)

2(2-g)=g+7

4-2g=g+7

-2g=g+7-4

-2g=g+3

-2g-g=3

-3g=3

g=-1

16) 8-1=7-2=5 Answer: H) 5

17) Answer: C) $16

s+(s-15.50)=47.50

2s-15.50=47.50

+15.50 +15.50

2s/2 63/2

s=31.50

31.50-15.50=16

Answer: 16