4) some one pls help me

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

Which letters from the table represent like terms? a and b b and c a and d b and d

Will give let f(x)=2x and g(x)=[tex]2^{x}[/tex] graph the functions on the same coordinate plane. what are the solutions to the equation f(x)=g(x) ? enter your answers in the boxes x=[? ] or x=[? ]