Solve the system by substitution.

y = - 2

10x + 2y = 40

What is a second linear equation to create a system that has exactly one solution for 3x+9y=-8

12x8+4-4=what is the answer?

If Pablo invests $4200 for 3 years and earns $630, what is the simple interest rate? Pablo's goal is to have $5000 after 4 years. Is it possible with a rate of 6%? Explain.

How is finding the rate of a table similar to finding the rate of a graph?

the original price of a scarf was $16. During a store-closing sale, a shopper saved $12 on the scarf. What percentage discount did she receive?

Which statement is true about f (x) = square root x

Two times the smallest of three consecutives even integers is four more than three times the largest. Find the integers.

If f (x) = 8x and g (x) = 2X+1 find (fog) (x)

Write an expression that represents the product of Q and 8:4

Mike wants to make meatloaf. His recipe uses a total of 5 pounds of meat. If he use a 3 to 1 radio of beef to pork how much pork what he used? Enter your answer as a mixed number in the simplest terms.