5^4 * 5^(-6) * 5
= 5^4 * 5^(-6) * 5^1
= 5^[ 4 + (-6) + 1 ]
= 5^[ 4 - 6 + 1 ]
= 5^(-1) <----- this is the answer.
I hope this helps. =)
<h3>
Answer: y = 7</h3>
Work Shown:

Explanation:
I replaced every x with -1. Then used the order of operations (PEMDAS) to simplify. Keep in mind that
and not 
Answer:
Step-by-step explanation:
The equation as written doesn’t work. Are you sure it is y = x² + 4x - 10, and not
y = -x² + 4x - 10 ?
y = -(x² - 4x) - 10
y = -(x² - 4x + 2²) + 2² - 10
y = -(x-2)² - 6
the vertex is a maximum at (2,-6)
Answer c ! Just believe me ik it right