Noah had 140 to spend on toys. He buys a train, a plane, and a toy car. That means he spent 20 on the train, 30 on the plane, and 10 on the toy car. How much does he have left?

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

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