Use the substitution to solve the system of equations

y = - 2x

x-3y=21

You deposit $7,500 into an account. After 10 years, the account is worth $44,187.02. If the interest compounds quarterly, calculate the annual interest rate.

Which planet has no true atmosphere. a. mars c. jupiter b. saturn d. mercury?

Suppose your average, after taking 3 quizzes, is 76 (out of 100). what must your average be on the next 5 quizzes to increase your average to 81 out of 100

Which of the following is not a binomial experiment? a. Asking 100 people whether or not the like pizza. b. Measuring the height of 100 people to see if they are over 6'1. c. Asking 100 people what their favorite color is. d.

Jenny has 63 grapes to put in a fruit salad but she only wants to add 40% of them to the Bowl how many grapes does she use for the fruit salad?

Susan found a bag of 20 golf balls at a garage sale, and bought the bag for 75 cents. Express the ratio of cost to number of balls in lowest terms. 20:75 75:20 4:15 15:4

What can you say about the graph of the function below? Check all that apply. F (x) = 4 * (7) ^x A. the y intercept is (0,7) B. the y-intercept is (0,7) C. the y-intercept is (0,4) D. the range of F (x) is all real numbers

Write an equation for the line in slope-intercept form The slope of the line is 3. The y-intercept is (0,4)

Nano purchased a computer for $800. If the sales tax rate was 8%, how much in all did he pay for the computer? $836 $848 $864 $872

The formula below gives l, the interest earned by depositing p dollars in a bank account at annual interest rate r for one year. l=pr If a deposit earns $75 of interest, which equation gives the principal p as a function of the interest rate r? A.