Solve the following system of linear equations by substitution and then state the correct answer. −16x+2y=32
y=8x+16

A). (−4,−7)
B). Infinitely many solutions.
C). (4,3)
D). (4,−2)

Lin is shopping for a couch with her dad and heard him ask the salesperson “how much is your commission? ” the salesperson says that her commission is 5 1/2% of the selling price. a.how much commission will the salesperson earn by selling a couch for $495? b.how much money will the store get from the sale of the couch?

Plz heeeeeeelp plz give me the answer

Solve with work adding cheese to a mcdonalds quarter pounder increases the fat content from 21g to 30g. what is the percent of change ?