The sum of seven interior angle measurements in an octagon equal 835º. what is the angle measurement of the 8th angle? (hint: an octagon has 8 sides.)
a.110
b.120
c.235
d.245
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During the election for class president, 40% of the students voted for kellen, and 60% of the students voted for robbie. 500 students voted in total. how many more students voted for robbie than for kellen? answer with work : )

Joline is solving the equation 0=x^2-5x-4 using the quadratic formula which value is the negative real number solution to her quadratic equation round to the nearest tenth if necessary

How to slove in standard form 1x+2y=-8