Use elimination to solve the system of equations.
2x + 5y = 7
3x + 6y = 3

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

When x = 3 and y = 5, by how much does the value of 3x2 – 2y exceed the value of 2x2 – 3y ?