Question

Please help! How do you solve? What are the answers?

Answer 1

a)

g(x+7)=2x+7

i- x+7=10 <=> x=10-7

<=> x=3

ii- g(10)=g(3+7)=2*3+7=6+7=13

iii- g(0)=g(-7+7)=2*(-7)+7=-7

Answer 2

i.x=3
i;m not sure what is ii and iii