I need to identify functions

The sum of the ages of Nicole and Rachel is 30. Currently Nicole is four years older than Rachel. How old is Rachel?

What is value of - x^2 - 4x - 11 if x = - 3

Which will have a greater effect on the volume of the prism: doubling the height or doubling the width? Explain your reasons.

Choose the correct answer for the amount of interest earned in the following simple interest problem. A deposit of $4,000 at 9.5% for 270 days

3/5 times 4 as a fraction

6,051 m = __km a. 0.6051 b. 6.051 c. 60.51 d. 605.1

Doug believes that the function y=6 is linear, while Olga believes that it is not linear. Who is right, and why? A Doug is right, because the function cannot be written in the form y = mx + b.

What is 4.27-1.29?

Which equation is 69 is greater than x

If x = 7, y = 1 and 2 = 1, then evaluate the following expression: X - y + z =