Answer:
60 ounces
Step-by-step explanation:
Jenna and her 3 friends = 4 people
picked 3 apples 4*3 = 12
The picked 12 apples.
Each apple weights 5 ounces
12 apples at 5 ounces
12 * 5 = 60 ounces
Given expression: 
In order to simplify it to get an equivalent expression, we need to multiply all terms.
Let us simplify 
Therefore, 

=
.
<h3>Therefore,

is equivalent to

</h3>
Answer:
20$
Step-by-step explanation:
A quarter is 0.25 cents so if you have 84 all you gotta do is multiply 84 x 0.25 and the answer is just 21$ so the closest answer is 20$ unless you can add the 20$ with the 1$ bill to get the final answer.
18-inch piece per present.
There are 7 presents
That means the total amount needed would be 18 * 7 = 126
The person has 120. 120 is less than 126, so no there isn't enough.
Are there choices? If there are, you should list them because there are some equivalents.
![\left[\begin{array}{cc}4&16\\12&3\end{array}\right] \\ \left[\begin{array}{cc}-68&16\\21&3\end{array}\right] = x \\ \left[\begin{array}{cc}4&-68\\12&21\end{array}\right] = y \\](https://tex.z-dn.net/?f=%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D4%2616%5C%5C12%263%5Cend%7Barray%7D%5Cright%5D%20%5C%5C%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D-68%2616%5C%5C21%263%5Cend%7Barray%7D%5Cright%5D%20%3D%20x%20%5C%5C%20%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D4%26-68%5C%5C12%2621%5Cend%7Barray%7D%5Cright%5D%20%3D%20y%20%5C%5C%20)
I'm assuming that you can solve these things. The top determinant comes to -180. The x value comes to - 540. When divided by the top one x = 3
The bottom determinant (y) comes to 900 and when divided by - 180 makes y = - 5. The checks out with actually solving the system of equations some other way.