PLEASE HELP! I will give extra points!!

2 answers:

8 0

1. D 4n -2. Two less = subtraction. 4 times(multiplication) a number n = 4n. Since we need 2 less than 4 times a number two, we need to subtract 2 from 4n.

2. B 50 - X. Sam had $50 dollars before he bought CDs(X). So we subtract X from $50 to find how much money Sam has left after spending (subtraction) X.

3. A. Rational
C. Integer
D. Whole

5. C. Distributive Property.

6. D. 13a + 3. 5(a + 3) - 4(3 - 2a) This makes use of the distributive property.
5(a + 3) = 5 x a + 5 x 3 = 5a + 15. -4(3 - 2a) = -12 -4 x -2a = -12 + 8a (a minus times a minus is always a positive). So now we have 5a + 15 - 12 + 8a. We can rewrite this as 5a + 8a + 15 - 12. 5a + 8a = 13a. 15 - 12 = 3. 13a + 3

7. C. $50.00 + $20.00 + 2($35.00) -2($10.00)
Deposit = Addition. Withdrawl = Subtraction. 1. 50 deposit(+) 2. 20 Deposit(+). 3. 2 Deposits(+) of 35 = 2(35) ::Distributive Property. 2 Withdrawls(-) of 20 = -2(20) ::Distributive Property.