80 patients gave information about how long they waited to see a doctor. the doctor says, "70% of our patients wait less than 30 minutes to be seen." is she correct? you must show your working.

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

Solve the inequality and graph 6j - 7 < 5

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.