Answer:
of an hour = 1 1/5 hour = 72 minutes
Step-by-step explanation:

13.
(a)

for x = 2:

for x = 5

(b)
The graph is:
(c)
Using the graph:



Using the quadratic formula:
I would say (I am abbreviating square root to sqrt)
1. 4 sqrt(8488) = 4 sqrt(2x2x2122) = 8 sqrt(2122)
2. 3 sqrt(6936) = 3 sqrt(6x34x34) = 102 sqrt (6)
3. 2 sqrt(8648) = 2 sqrt(2x2x2162) = 4 sqrt(2162)
Undefined is the answer for me. Lol
Answer:
2934.46692
Step-by-step explanation:
if you need to round it,
hundrenths: 2,934.47
tenths: 2,934.5
Thousandths: 2,934.467
Hope this helps!