Kevin and Randy Muise have a jar containing 82 coins, all of which are either quarters or nickels. The total
value of the coins in the jar is $10.50 How many of each type of coin do they have?
The jar contains
quarters

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:

y=mx+b

step-by-step explanation:

m slope

b y-intercept