Number 1 i don’t get it there is no pictures and what is a linear pair?

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°

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?

Anyone know these questions? i need ,.