Answer:
Slope- intercept form: -1/2x+12
Well , we now the password would be :
3 _ _ _
and if there is no 0 and 9, the combination must be between 1 to 8
So the possibility of password would be :
8 x 8 x 8 = 512 possibilities
The answer is option B.
Hope this helps
So basically the answer is 54, here’s my work:
It's important to understand how perfect square trinomials work.
Say we had a factored perfect square trinomial in the form (x - n)²
If we distributed that out we'd have x² + 2nx + n².
Now, take a look at our expression... x² - 10x.
Imagine that 2nx term as 10x...n =5.
In that case, we'd have to add 25 to make our perfect square trinomial
as a rule of thumb: halve the x coefficient, square it, and then add it.
