Recall your d = rt, distance = rate * time.
bearing in mind that, when she's going downstream, she's not going 40 mph, she's going 40 + 4 mph, because the stream is adding its speed to it.
likewise, when she's going upstream, she's going 40 - 4 mph, because the stream is eroding speed from it, thus

so, "u" is 16 minutes and 40 seconds.
and "d" is 13 minutes and about 38 seconds.
Answer:
a2b
Step-by-step explanation:
a6b3 / a4b2
When dividing exponents, you subtract them.
a6-4
b3-2
Leaving you with a2b
Use the Distributive property to solve.



Hope that helps!
Answer:
x = -4 or y = 7 or f(x) = 7
Also:
Plz mark brainliest if this helped plz :)
Answer: A. Y=80x+35
Because it says every hour he spent so I’m guessing he earned it