solve using substitution' 4x+3y=18 and 2x+y=8

Elena checked out a total of 20 books from the library. She checked out 4 more mystery novels than romance novels,[..]

A piece of string 37 inches long was cut into three pieces. The first piece is 7 inches shorter than the second[..]

A superhero recently asked his nemesis how many cats she has. She answered with a​ riddle: ​"Three dash fourthsThree[..]

Share $48 amongst A, B and C so that for every $4 given to A, B receives $3 and for every $4 given to B, C receives $3.

Shelley Tilton bought 1 3/4 lbs of sliced roast beef, 8 1/2 lbs of sliced ham, and 3/4 lb of coleslaw at Albertson's[..]

Lee Co. carpeted its offices, requiring 310 square yards of commercial carpet. The total cost of the carpet at Home[..]

Be sure to include a "let" statement to define any variable you decide to use in your equation. In one section of[..]

A tennis player hits a ball 3 feet above the ground with a velocity of 45 ft/sec. How long will it take the ball to[..]

A tennis player hits a ball 3 feet above the ground with a velocity of 45 ft/sec. When will the ball be at a height[..]