Find the locus of a point which moves such that the sum of its distance from point (-4,3) and (4,3) is 12 hence find: the foci ,the direntrix and the length of latus rectum

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18

Ihonestly have no clue if it's each or none.

Find the maximum value of p= 4x + 5y subject to the following constraints :