9..divide both sides by 10 cross out the 10 over 10 leaves 9
Answer:
−2+4
Step-by-step explanation:
There are many ways to do this. Such ways are using the quadratic formula, completing the square, etc.
We have

We can add 46 to both sides so the -21 becomes a +25. by doing that, we get

This can be wrote as

We solve the square root and get

(The +- is a plus minus sign.) Subtract five on both sides to get

The answer is
C.
0.06(x-6000) = 2745
0.06x - 360 = 2745
0.06 = 2745 + 360
0.06 = 3105
x = 3105 / 0.06
x = 51750
the answer is 51750, hope this helps