The cost of a family membership at the health club is $58 per hour plus a one-time $129 start up fee. if a family paid $651, then how many months is their membership?

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints