Answer:
1. Total spent on transportation $222.2.
2. $ 192.5
3. She spends $30 over the guideline.
Step-by-step explanation:
As per the image attached:
Total monthly spent on transportation = Total monthly car payment + Spent on gas fuel
Total monthly spent on transportation = 120 + 37.9 + 28.4 + 35.9 = $222.2
So, Answer 1. Abby's total spent on transportation = $222.2
Calculating the percentage:


Calculating 11% as per the guideline:

Answer 2. As per the guideline, she should spend $192.5 on transportation.
Difference between spending and guideline = $222.2 - $192.5 = $29.7
Answer 3. She spends $29.7 over the guideline.
1. (2,3)
2. (-1,-1)
3. infinitely many
4. coincident
5. consistent independent, coincident, inconsistent (in that order)
Answer:
7a. D)
7b. $78
Step-by-step explanation:
7a: We're given the information that there's a daily fee of $50 and $0.35 per mile driven, which is m. We can write "$0.35 per mile driven" as 0.35m. Then, the total amount of money it costs represented as an expression is 50 + 0.35m, thus, making it answer D).
7b: In this problem, we have to take our previous expression 50 + 0.35m, plug in the value of m, and simplify.
Thus, the answer is $78.
Have a lovely rest of your day/night, and good luck with your assignments! ♡
Answer:

Step-by-step explanation:
Suppose the electrician spends t hours at the house working.
Amount charged for every house call by electrician = $50
The electrician earned a total of $400 for a 5 hour job.
Also, C denotes total cost of the electrician's services.
So, the equation for C in terms of t is given below.

Here, 
Answer:
a + 20 = 7*12 (multiplied both sides by 12)
a + 20 = 84 (calculated 7*12)
a = 84 - 20 (subtracted 20 on both sides)
a = 64 (calculated 84-20)