Answer:
slope = -2
Step-by-step explanation:
y2 - y1 over x2 - x1
so do
7-3/ 2-4 = your slope
4/-2
Answer:
The difference in per-mile costs for the two companies is $0.12
Step-by-step explanation:
Gabi sets up the equation
to find out after how many miles, m, the companies will charge the same amount.
The first company charges
for m miles driven.
The second company charges
for m miles driven.
In both these functions, numbers 7.20 and 8,40 represent the initial fee the companies charge.
Numbers 0.22 and 0.1 represent per-mile costs.
Thus, the difference in per-mile costs is 
Another way to solve this problem is to find the cost per mile driven for each company:
1. Cost per-mile 1st company

2. Cost per-mile 2nd company

3. Difference:

Answer:
The appropriate answer is "0.9803".
Step-by-step explanation:
According to the question,
The probability of sample proportion differs from population proportion by les than 4% will be:
= 
= 
= 
= 
6%
to find the percentage you divide 10.80$ by 180$ and get 0.06
0.06 is 6% in decimal form
therefore there was 6% sales tax (sales tax is usually 6-8% so this makes sense anyway)