Answer:
the y-intercept is (0,5)
Step-by-step explanation:
Mike ($3.75): x
Friends ($3.75): 3x
Mike + Friends ≤ 25
3.75(x) + 3.75(3x) ≤ 25
3.75x + 11.25x ≤ 25
15x ≤ 25
≤ 
x ≤ 1
Answer: they can rent the paddleboards for 1 hour 40 minutes
Regular size saves $0.0003 per gram I think
someone pls fact check me