Answer:
F^-1(x)=0.125x-0.125
Step-by-step explanation:
Y=8x+1
X=8y+1
8y=x-1
Y=0.125x-0.125
A
B
F
are all correct
I need to write more to get this published
Answer:
(1,7)
Step-by-step explanation:
first find the slope
9-5/4-(-2)=4/6=2/3
5+2=7
-2+3=1
=(1,7)
Answer:
40 mph
Step-by-step explanation:
We assume "outbound" refers to the trip <em>to the lake</em>. The ratio of speeds is inversely proportional to the ratio of times, so ...
outbound speed : inbound speed = 4 : 3
These differ by one ratio unit, so that one ratio unit corresponds to the speed difference of 10 mph. Then the 4 ratio units of outbound speed will correspond to ...
4×10 mph = 40 mph
Paul's average speed on the outbound trip was 40 mph.
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The distance to the lake was 120 mi.
