Help me with this question, please?

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

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.

Simplify the expression 10/11(22z) + (a+5) -1