If c= 1+px^2+3p and b= 2p+6p^2 find an expression that equals 2c-b in standard form

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?