What is the area of the following circle? Either enter an exact answer in terms of 1 or use 3.14 for 7 and enter your answer as a decimal. 3 r = 5 units​

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.

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.