Answer:
11880 different slates of candidates are possible.
Step-by-step explanation:
The order is important in this problem.
That is, John, Elisa, Laura and Rose means that John is the chairperson, Elisa the first vice chairperson, Laura the second vice chairperson and Rose the secretary. If we exchange John and Elisa, for example, it means that their roles also have changed.
So we use the permutations formula to solve this problem.
The number of possible permutations of x elements from a set of n elements is given by the following formula:

How many different slates of candidates are possible?
Four roles in a set of 12 members. So

11880 different slates of candidates are possible.
Answer:
The answer is D

That's the only equation will get us one point
Answer:
The answer is C.
In order to make an exponent positive, you just switch it to the opposite part of the fraction. So, for example,
x^-3= 1/x^3
or
1/x^-5 = x^5/1
You just switch it to the opposite part of the fraction, and make the exponent positive.
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Step-by-step explanation:
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:
Alex timed 7 by 2 instead of 7 times 7 because 7^2 is an exponent.