exam Maths Puzzle Numerical Ability

the measure of each of the congruent angles of an isosceles triangle is 9 degrees less than 4 times the vertex angle. find the measure of each angle of the triangle

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solve :

log(base3)(3x+4)=log(base3)49
Write an equation in slope intercept form of a line that passes through points,(1.4, 2.7) and (3.9, 1.1).