Given f(x) = x² + x + k, and the remainder when f(x) is divided by x-9 is 70, then what is the value of k?

Afactory adds 3 red drops and 2 blue drops of coloring to white paint to make each pint of purple paint. the factory will make 50 gallons of the purple paint.how many drops of red and blue coloring will the factory need in the 50 gallon batch of purple paint.

There is a spinner with 14 equal areas, numbered 1 through 14. if the spinner is spun one time, what is the probability that the result is a multiple of 2 or a multiple of 5?

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?