5 hours because 800/25=32
32= 2^5
25 X 1 = 25
25 X 2 = 50 AFTER FIRST HOUR
25 X 2^5 = 800 AFTER FIFTH HOUR
Answer:
A
Step-by-step explanation:
Given
p² + 2p - 8 = 0 ← in standard form
with a = 1, b = 2, c = - 8
Using the quadratic formula to solve for p
p = ( - 2 ±
/ 2
= ( - 2 ±
/ 2
= ( - 2 ±
) / 2
p =
=
= - 4
p =
=
= 2
Answer: An estimate or approximate number
Step-by-step explanation: