I need help with this, math proportions

Number 10

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?