<span>We can expand this expression using foil method (first, then out, then in then last), multiply them together:
(y+5)(y+7)
y^2 + 7y + 5y + 35
y^2 + 12y + 35
This is already simplified and thus is also the final answer. There are also other ways but foil method is the easiest.</span>
X / 25 = 0.84
x = 21
25 - 21 = 4
Therefore Sam misses (got incorrectly) 4 questions. Hope I helped!
Explanation in pictures.
Hope this helps!! Have a good day!
It is exponentially each time you are dividing by 4/3