Name: SAT Math Help & School Math Mastery
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#37404

angles

hard

90 sec

In the figure, two lines intersect. Angle R and Angle S are vertical angles. If the measure of Angle R is $(2 x + 10)^{\circ}$ and the measure of Angle S is $(5 x - 80)^{\circ}$ , what is the measure of an angle that is supplementary to Angle R?

A.

$7 0^{\circ}$

B.

$11 0^{\circ}$

C.

$12 0^{\circ}$

D.

$13 0^{\circ}$