How do i simplify - 2x - y - 2z?

Seven kids and three adults are going to the circus. Kid's tickets are on sale for only half the price of adult tickets. The total cost is $63. How much is one kids ticket? How much is one adult ticket?

Frank reads at least 24 pages but not more than 36 pages of a book. He reads 12 pages per hour. The number of hours Frank reads p pages is modeled by a function.

What is the value of 7/9 - 0.4

What is the missing step in solving the inequality 4 (x - 3) + 4 < 10 + 6x?

What is the equation for x+1, x+2, x+3

If a+b=12 and a-b = 8, what is the value of a^2+b^2?

In which quadrant is (1/2, - 1.8) ?

Is 3/5 terminating number

Solve for x of the triangle x^2=4x9

Solve the following equation for m - 2m+7=11