Sam walked of a mile to school. he also walked of a mile on his way home. how far did sam walk in all?

In what form is the following linear equation written y=9x+2

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Janet is rolling a number cube with the numbers one through six she record the numbers after each row if she rolls of keep 48 times how many times should she expect to roll a 4