Help Me Now! I Won't Go To The 8th grade again. Which function changes at a greater rate? Explain.​

Find two numbers if their sum is 91 and the ratio is 6: 7?

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?