I really need help. Can someone help me with making a linear, quadratic and exponential models. All models need to include the regression line, regression equation and the coefficient of determination.

Find the value of x for which the lines are parallel.

Write the equation in logarithmic form e^x=403.429

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.