Answer:
4.
or -5 (It's a negative slope)
5. 0 (It's a horizontal line)
6. 
Formula: 
Answer:
It's okay the first answer is right, $0.15
The store makes $4.20 off the rope
Step-by-step explanation:
Answer:
30%
Step-by-step explanation:
14/20 is 70% he gave away, so 30% is left.
Answer:
a=6 or -6
Step-by-step explanation:
Solve the determinant to get a²-36=0
(a-6)(a+6)=0
a=6 or -6
I agree because when you multiply a positive number such as 1/10 by any negative number the result will always be negative.