Answer:
John = 41 years
Sam = 32 years
Step-by-step explanation:
1. slope for pq is 150 / 3 but simplified is 50/1
2. 200
3. 4
f(4)=9*4-2 =34 & g(4)= -2*4 =-8 then,
f(4)- g(4) = 34+8= 42