3x + 2y = 60; x + 2y = 30; x > 10; y > 0. Find the point having whole number coordinates and satisfying these inequalities which gives: (a) the maximum value of 2x + 3y
(b) the minimurn value of xy

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12