What is 4270 rounded to the nearest thousands

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.

Which of the following circles have their centers on the x-axis? check all that apply.

Find the x-intercepts for the parabola defined by this equation: y=-3x^2-6x+9