The first computer is usually regarded as one called roach completed in 1945. email was invited in 1971. how many years after the computer was email invented

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system

median- 36f

mode - none

mean- 33.7 ~ 34f