Answer:
c
Step-by-step explanation:
The commutative property is a property of <em>addition</em>, not of <em>subtraction</em>. It can work in a subtraction problem if you keep the sign with the number, so you're adding positive and negative numbers.
3 - 6 + 5
= (3) + (-6) + (5)
= (3) + (5) + (-6)
= 3 + 5 - 6
Answer:
y = 3/2 * x + 12
Step-by-step explanati
2x + 3y = 12
y = -2/3x + 4
slope: -2/3
slope' of perpendicular line: 3/2
6 = 3/2 * (-4) + b
b = 12
equation: y = 3/2 * x + 12
15% of 30
0.15(30) = 4.5....left a tip of 4.50
