Answer:
-4
Step-by-step explanation:

Answer: 5x + 2
Step-by-step explanation:
Answer:
it the 3rd one
Step-by-step explanation:
Answer:
a, b, d, e
Step-by-step explanation:
negatives obviously and any decimal not close to 1
Answer:
24
Step-by-step explanation:
let Sammy's age be x and Lisa y
since Lisa is 4years older than Sammy
y=x+4
28-4=y
y=24