Answer:
B. Dan walked uphill, then downhill.
Step-by-step explanation:
The place that the slope went up is based on the distance from the starting point, so the distance is up then down. I hope this helped and please mark me as brainliest!
TWO SCREENSHOT BELOW FOR THE ANSWER
Answer:
0.216
Step-by-step explanation:

is this the standard form?
Answer:
7.87 years
Step-by-step explanation:
#First we determine the effective annual rate based on the 9% compounded semi annual;

#We then use this effective rate in the compound interest formula to solve for n. Given that the principal doubles after 2 yrs:

Hence, it takes 7.87 years for the principal amount to double.
Answer:
Using the provided formula, the amount of money Jamal have after 4 years:
A = 4253 x (1 + 1/100)^4 = 4425.69$
Hope this helps!
:)