Evaluate each expression for t = 0, x = 1.5, y = 6, and z = 23 1. y + 5 = ??

2. z - 2x = ??

3. 2z - 2y = ??

4. 2.6y - 2x =??

5. 4(y - x) = ??

6. 4(2 + z) + 5 = ??

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

How do you use the elimination method for this question? explain, because i really want to understand!

Which expression is not a polynomial?