At a park, it costs $9.75 an hour to rent a bicycle. It costs $7.25 an hour to rent a scooter. Aaron has a coupon for $10 off the rental of a bicycle. He wants to know after how many hours it will cost more to rent the bicycle
than the scooter.
Should he write an equation or an inequality to help him solve this situation?

Why?

Define the variable:

Write the equation or inequality:

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4

Mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.