25)Format of equation of vertical line: x = (x-coord of passing point.).
ANS : D.
27) The function is y = 4.25x + 50 and that's elementary....... Solving is elementary too....... Just substitute x = 6 into the formula.
y = 4.25(6) + 50 = 25.5 + 50 = $75.5 OR $75.50
ANS : D.
28) integers means negative and positive whole numbers. negative money is odd right? SO the answer won't be A and B.
D wouldn't be the answer too because you won't have $sqrt3 in your wallet.
ANS: C.