Answer:
Step-by-step explanation:
Answer: The answer is (b) The ranger will need to clear trail for more than 10 2/3 additional hours.
Step-by-step explanation: Given that a park ranger would like to clear more than 10 mi of trail. Till now, he has cleared 2 mi. From now on, he can clear 3/4 mi of trail each hour.
Since 2 mi of the trail has already been cleared, so the trail that is left to be cleared = 10 - 2 = 8 mi.
Let, the park ranger will work for 'x' more hours. So, we have

Thus, the park ranger will need to work for 10 2/3 more hours.
Hence, the correct option is (b) The ranger will need to clear trail for more than 10 2/3 additional hours.
DENOTING
Eqn 1: 3x+4y=58
Eqn 2: 1x+3y=36
TRANSLATING
(Multiply Eqn 2 by 3)
Eqn 3: 3x+9y=108
ELIMINATION
(Subtract Eqn 3 from Eqn 2)
Eqn 4: -5y=-50
Divide both sides by -5 to derive the value of y.
y=10
SUBSTITUTION
(Substitute the value of y to any of the first two equations)
3x+4(3)=58
3x=58-12
3x=46
x=46/3 or 15 1/3
You need to know: how many roots there are IS THE ANSWER to your question
Answer:
a
Step-by-step explanation:
For negative correlation, Look for data that is going down