1) A plane flying a straight course observes a mountain at a bearing of 35° to the right of its course. At that time the plane is 10 kilometers from the mountain. A short time later, the bearing to the
mountain becomes 45°. How far is the plane from the mountain when the second bearing is taken
(to the nearest tenth of a km)?
A) 123 kilometers B) 5.4 kilometers C) 8.1 kilometers D) 13.6 kilometer

the answer is c

step-by-step explanation:

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d