john has 16 red balls and 12 black balls. what is the ratio ( in simplest form) of red balls to black balls

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2