Apopular brand of pen is available in 5 colors and 4 writing tips. how many different choices of pens do you have with this brand?

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?