PLZ HELP
5³×25
how do you solve

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

True or false look at the picture pls : /

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.