Answer:
15
Step-by-step explanation:
3 by the power of 2 + 5 • 2 — 4
I assume that "3 by the power of 2" means 3^2.
3^2 + 5 • 2 — 4 = 3 * 3 + 5 * 2 - 4 = 9 + 10 - 4 = 19 - 4 = 15