<span>y=4x−1;y=2x−5
Step: Solve y=4x−1 for y:
Step: Substitute 4x−1 for y in y=2x−5:
y=2x−5
4x−1=2x−5
4x−1+−2x=2x−5+−2x(Add -2x to both sides)
2x−1=−5
2x−1+1=−5+1(Add 1 to both sides)
2x=−4
2x/2=−4/2(Divide both sides by 2)
x=−2
Step: Substitute−2 for x in y=4x−1:
y=4x−1
y=(4)(−2)−1
y=−9(Simplify both sides of the equation)
<u>Answer:</u>y=−9 and x=−2</span>
Answer:
(b) For each hour that Michelle drove, she traveled an additional 50 miles.
Step-by-step explanation:
Given
---- start
--- end
Required
Which is true
(a): Journey = 6 hours
This is false, because:


---- 7 hours
(b): The average rate is 50 miles per hour
To do this, we calculate the slope (m) using:




This means that the rate is 50 miles driven in 1 hour.
<em>(b) is correct</em>
<em></em>
<em>Others are incorrect</em>
Answer:
Im thinking naval bases, you didnt provide enough info. Hope this answer is correct!
Take the radius squared 10*10=100 then times that by pi which equals 314 then by 16 which is 5,024 then multiply that by 75 and get 376,800