Number 3 is the correct answer
For simplicity, disregard the fractions. Then you have 48 + (- 39), since opposite signs change into a negative sign, you have 48 - 39. What is the answer?
POSITIVE
Becaus you have 2A and 2b this is what i think it could mean A+A+B+B
This function has the y-intercept (0,0). What this means is that if there are no people in this group, no admission fee is payable. For each new person added to the group, the total admission fee payable would increase by a fixed amount, which would be the unit fee per person (e. g., $5/person).