Answer:
13 weeks
Step-by-step explanation:
8×13=104
125-104=21$
<h2>
Answer: -50.4</h2>
Step-by-step explanation: -6.3 x 8 = -50.4
It looks like you might have intended to say the roots are 7 + i and 5 - i, judging by the extra space between 7 and i.
The simplest polynomial with these characteristics would be

but seeing as each of the options appears to be a quartic polynomial, I suspect f(x) is also supposed to have only real coefficients. In that case, we need to pair up any complex root with its conjugate to "complete" f(x). We end up with

which appears to most closely resemble the third option. Upon expanding, we see f(x) does indeed have real coefficients:

Answer:
11307.19 rounded and exact is 11307.1875
Step-by-step explanation: