Igloos Unlimited charges $150 per night, with a 50% discount every night after the third night. If you stay for eight nights, how much will you pay?

(150x3)+((150/2)x5)=(450)+((75)x5)=450+375=825. You would have to pay $825.

true statements:

a) x + y = y + x   ⇒ commutative property of addition

b) (x * y) * z = x * (y * z) ⇒ associative property of multiplication

d) (x + y) + z = x + (y + z) ⇒ associative property of addition

false statements:

c) x - y = y - x   should be: x - y = - y + x

e) (x - y) - z = x - (y - z) should be: (x - y) - z = x - (y + z)

step-by-step explanation: