Write 720,080 in expanded form with exponents

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.

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Math it's appreciated. (picture provided)