Answer:
29
Step-by-step explanation:
Since they have given you x = 4, simply sub it into the equation,
(4)^2 + 3(4) - 7 + 8
= 29
Substitute 4 for x into the expression x^2+3x−7+8 and then simplify using the order of operations.
4^2+3(4)−7+8
16+12−7+8
