exam Maths Puzzle Numerical Ability

The sum of the measures of two obtuse angle is 215.The sum of three-fifths of the supplement of the smaller angle and two-thirds the supplement of the larger angle is 91. Find the measure of the two angles.

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exam Other Question

find the difference quotient of the following:

f(x) = 3x - x^2
I need to graph this problem:

slope: -3/4;y-intercept: (0,8)