evaluate the expression 2b^3+5 (BTW I did the first part it's 3 but I need the second part)

To find the exact answer based on the last step, "[tex]2(3)^3+5[/tex]", you must use PEMDAS (attached image below)
[tex]2(3)^3+5=2*27+5=54+5=59[/tex]
Thus the answer is 59.
Hope that helps!