Solve the system of equations using the substitution method.

-3x - y = 15

y = - 8x

Suppose a researcher compiled a data set consisting of the following variables for a sample of 100 retired men. For each variable, select whether it is discrete or continuous.

You have decided to wallpaper your rectangular bedroom. The dimensions are 12 feet 6 inches by 10 feet 6 inches by 8 feet 0 inches high. The room has two windows, each 4 feet by 3 feet and a door 7 feet by 3 feet.

Determine whether quantities vary directly or inversely and find the constant of variation. Liz is a jabber-mouth; she can speak 225 words in 5 minutes. At this rate, if she talks from 10:30 a. m. until 11:15 a. m.

8m + 4n + 7m - 2m simplify

Dylan bought 3 identical shirts online for a total cost of $71.83 including a flat rate of $7.99 for shipping. Drag numbers to complete an equation to find the cost of each shirt, s. Each number may be used only once.

The yearly sales of candles decreased from 560 to 476. By what percentage did the candle sales decrease?

12345678910 Which expression shows 12 more than the quotient of 63 and 9. A) 12 + 63 : 9 B) 12 + 9 : 63 C) (12 + 63) : 9 D) (12 + 9) : 63

What is the domain of f (x) = cos (x) ?

Mike and Kim invest $14,000 in equipment to print yearbooks for schools. Each yearbook costs $7 to print and sells for $35. How many yearbooks must they sell before their business breaks even?

What is the solution to the system of equations? Use the substitution method. j + k = 3 j - k = 7 A. The solution is (8, 1) B. The solution is (5, - 2) C. There is no solution. D. There are an infinite number of solutions.