<u><em>Answer:</em></u>
<u>The two correct options are:</u>
The first term, 5x³, can be eliminated
The exponent on the first term, 5x³, can be changed to 2 and then combined with the second term, 2x²
<u><em>Explanation:</em></u>
The degree of an expression is given based on the highest power in the expression
<u>The given expression is:</u>
5x³ + 2x² + 7x - 3
We can note that the highest power in the given expression is 3 which means that <u>the degree of the expression is 3</u>
<u>A quadratic function</u> is a function of <u>degree 2</u>. This means that the highest degree in the expression (function) must be 2
Accordingly, Martha should get rid of the term with power 3 (5x³) in her equation
<u>This can be done by 2 methods:</u>
1- She simply eliminates the term with the third degree
2- She changes the degree of the term with degree 3 to a lower degree and combines it with any existent like term
<u>Comparing the above with the given options, we can conclude that the two correct options are:</u>
- The first term, 5x³, can be eliminated
- The exponent on the first term, 5x³, can be changed to 2 and then combined with the second term, 2x²
Hope this helps :)
. Doing the math on the right, keeping in mind that logs have an unwritten base of 10, gives us 
. Rewriting this in exponential form is 
. That means that x = 8. Not negative, only positive.