Answer:
8
Step-by-step explanation:
3x^2 - 4
Let x = 2
3 * 2^2 -4
Exponents first
3 *4 -4
Then multiply
12 -4
Now subtract
8
Mark up percentages are used to increase the prices of items
The dealers cost of the refrigerator is $591.36
<h3>How to determine the dealer cost</h3>
Represent the dealer cost of the refrigerator with x.
Given that the markup is 20% and the selling price of the refrigerator is $739.20, then we have the following equation
x = 739.20 * (1 - 20%)
Evaluate the product
x = 591.36
Hence, the dealers cost of the refrigerator is $591.36
Read more about mark ups at:
brainly.com/question/19104371

Dividing by a fraction is the same as multiplying by its reciprocal. (flipped version)

6 and 9 are both divisible by 3, so we can simplify 6/9 = 2/3.

We can multiply across right now, but we might as well cross cancel.
Look at the numbers diagonal from one another...-3 and 3 are both divisible by 3, so we can change them to -1 and 1...2 and 2 are both divisible by 2, so we can change them to 1 and 1...

Any fraction over 1 can just be expressed as a whole number.

Our final answer...

If you were to multiply across, (maybe you don't like cross cancelling, idk?) you'd get the same answer, of course.
2800 miles.
It takes one hour to go 350 miles, so if you multiply 350(miles) x 8(hours), you will get 2800.