①6+ (4-7)
©
( 3+ 8) + (10-1)
20
9+(-2-8)
(10 (6 - 7) + (-11 + 2)
3 -12 + (-1 +5)
(11) (5--4) + (-5 - 4)
15
4-3-(3-10)
(12) (-2+ +6) + (20 +-18)
6 (2 + 15) --4
(13) (-7- 1) – (3 + 7)
6 (-5--1) + -8
14) (-11 + 6) - (9-10)
© (9 - 16) + 2
(15) (6 +-8) - (-3-4)
(4 + -7) – -12
(16) (1 --99) – (-1 +99)

5.5

step-by-step explanation:

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

48 / 6 = x

in this case, x will equal the amount of money in each card!

x therefore will be 8.

trent had $8 in each birthday card.