Simplify: -15w^3 + (-13w^3)
enter the original expression if it cannot be
simplified.

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

What is the equation of the line that is parallel to the line with the equation y= -3/4x +1 and passes through the point (12,-12)