Describe two different ways that you could find the product 4 × 998 using mental math. Find the product and complete the explanation of why your model works. (1) Think of 998 as 1,000 − 2. So, 4 ×
= 4(1,000 − 2). By the
(select)
Property, 4(1,000 − 2) = 4,000 − 8 =
.

(2) Think of 998 as 900 + 90 +
. By the
(select)
Property, 4(900 + 90 + 8) = 3,600 + 360 +
=

22, 28, 34, 40, 46

b)   f(n) = 6n + 16

n = what is the number of the row ( 22 would be row 1) so if we replaced n with 1, we would get 22

c)   the 14th row will have 100 seats

(1)   (2)   (3)   (4)   (5)   (6)   (7)   (8)   (9)   (10) (11) (12) (13) (14)

22 | 28 | 34 | 40 | 46 | 52 | 58 | 64 | 70 | 76 | 82 | 88 | 94 | 100

i believe it is the square root of 122 because when you turn it on it's side, to where the 5 inches is on the bottom, it looks like it is the same length.