Findthe product of (3x+1)(x-1)using the algebra tiles​

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 360, a standard deviation of 4, and a margin of error of 2.5%

What is the value for this expression? 2e-5

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5