Kelly sells Chairs for Furniture Inc. She earns $1000 per month, plus $60 per chair that she sells. Let y be Kelly's monthly salary and x be the number of chairs she sells in a month.

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°