Question

Sam wants to buy a video game that costs $125, He has already saved $50 so far. He tutors

a neighborhood kid to make extra money and earns $15 per session. Which inequality can
be used to determine the number of sessions, s, he needs to conduct to have enough money
to buy the video game?
A. 15x + 50 ≥ 125
B. 15x + 50 ≤ 125
C. 50x + 15 ≥ 125
D. 50x + 15 ≤ 125

Answer 1

We can use inequality B to determine the number of sessions Sam needs to conduct. The reason is that he already has $50 and he wants to have enough money, so he needs to earn the remaining amount through tutoring. Thus, we can write the inequality as:

15s + 50 ≥ 125

where s is the number of tutoring sessions he needs to conduct. We can simplify and solve for s as follows:

15s ≥ 75

s ≥ 5

Therefore, Sam needs to conduct at least 5 tutoring sessions to have enough money to buy the video game.