Answer:
The required expression for total cost: 
The cost for renting car for 2 days and driving 70 miles is $51.88
Step-by-step explanation:
Consider the table shown below which repented the required options.
Car Rental Prices
:
Option 1 Option 2
$19.99 per day $50 fee
$0.17 per mi $0.17
Let d represents the number of days and m represents the number of miles.
you rent a car using option 1, For d days and m miles.
The required expression for total cost: 
Find the cost for renting car for 2 days and driving 70 miles
Substitute d=2 and m=70 in above expression.



Hence, the cost for renting car for 2 days and driving 70 miles is $51.88
Answer:
Each side of the field is <u>9 yards</u> long.
The correct answer is Ⓑ 9 yd.
Step-by-step explanation:
Given:
A square field has an area of 81 square yards.
Now, to get the length of each side of the field.
As, the square field is having an area of 81 square yards.
Now, to get the side of the square field we put formula:

Therefore, each side of the field is 9 yards long.
The correct answer is Ⓑ 9 yd.
452÷8= 56.5
56 remainder 5
-4.5 - 4.2(-x - 5.5) = 3x
-4.5 + 4.2x + 23.1 = 3x
18.6 + 4.2x = 3x
subtract 4.2x from both sides of the equation
18.6 = -1.2x
divide -1.2 from both sides of the equation
-15.5 = x