Solve the given system of linear equations. 5. 3x1 + 10x2 = 6 2x1 + 10x2 = 9 6. 7x1 + 4x2 = 5 5x1 + 3x2 = 2 7. x2 + 3x3 = 4 5x1 + 5x2 + 4x3 = 2 x1 + x2 + x3 = 2 8. x1 = 2 −2x1 + x2 = 3 5x1 − 4x2 + x3 = 2

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

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.

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.