Find the number of distinguishable permutations of the letters in the word butterfly.

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

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project