Zack paid for a DVD with a $20 bill. The price of the DVD was $19.50. How many combinations of nickels, dimes, and quarters are possible as change for $0.50?

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

What is the rate of change of a line that passes through (2,-5) and (6,-2)?