Answer:
450
Explanation:
You want the value of (5 × 10⁰) × (9 × 10¹).
Evaluation
(5 × 10⁰) × (9 × 10¹) = (5) × (9×10) = 450
__
Additional comment
Any number to the 0 power is 1. Any number to the power of 1 is that number.
Your calculator can help you evaluate numerical expressions.