<u>Answer:</u>
zero
<u>Explanation:</u>
<u>In any system:</u>
the ground (base) is referred to as zero lever
what comes above the ground level would be positive
what comes below the ground level would be negative
<u>Now, we are given that:</u>
she lives on the ground floor.
Based on the above, the representation would simply be zero
Hope this helps :)
I’m pretty sure it is B or C
In order to find which <u>expression</u> is <u>equivalent</u> to <u>simplify</u> all given expressions:
0.
1.
2.
3.
4.
Therefore,
Answer: correct choice is A
8(t^2+t-9) should be the answer