The square of a binomial is written like
In your case, you have , which implies
So, we want to write
But our left hand side is
If we add 26 to both sides, we have
It seems to me, that if you were to add the price of all three items together, then multiply by 7.5%, you'd have the answer. Remember that 7.5% = .075 ... in other words, that is the number you would multiply the sum of the items by. Does that help?
angle for triangle is 180°
angle ACB is 75° because it has mention that is an isosceles triangle
So that angle of BAC is 180°-75°-75°=30°
ANSWER
C. x>5
EXPLANATION
The given inequality is:
3x + 3 − x + (−7) > 6
Deal with the parenthesis first to obtain;
3x + 3 − x −7 > 6
Group similar terms to get:
3x − x> 6-3+7
Combine similar terms to get,
Divide both sides by 2 to obtain:
The correct choice is C. x>5