How to solve y=2x+6 and 2x+y=18 in elimination method?

21k - 3n + 9p > 3p + 12

A full container that holds 96 fluid ounces developed a leak in the bottom. After 72 hours, all the liquid had emptied from the container. What was the average rate at which the liquid drained from the container, in fluid ounces per hour?

you invest $1,000 in each of two accounts. account a earns simple interest at a rate of2.42 % over 4 years. account b earns simple interest at a rate of2.42% over 24 months. find the interest earned by each account.

16, 10, 5, 7, 13 Based on your sample, what is the average age of the porcupines? What is the standard deviation? Round your answers to the nearest tenth.

Each general admission ticket for a local symphony concert is $24. if someone who is a student or a senior citizen attends, the ticket cost is only $20 per person. Suppose the tickets sales for one hour brings in $520.

You have a bag of marbles. There are 10 red marbles, 80 green marbles and 110 orange marbles. You get one marble out and record what it is before putting it back and shaking the bag.

Find the range of values of x for which |x-4| is greater than or equal to 2

What is m∠A? 45° 103° 77° 35°

Suppose you are managing 19 employees, and you need to form three teams to work on different projects.

Jack rented 2 times as many DVD's as Paloma last month. Paloma tented 4 fewer than Greg, but 4 more than grace. Greg rented 9 DVD's. How many DVD's did each person rent?