Pls answer each of these problems clearly thank uuu

Let r = 3. what is the value of r + 58?

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?