Two people, A and B, travel from X to Y along different routes. Their journeys take the same amount of time,
A's route
90 km
B's route
60 km
B travels at an average speed of 40km/h.
What is A's average speed?

b

step-by-step explanation:

g(x) is the negative form of f(x)? because whenever its the negative form it reflects its self over the x axis. idk if this is right though.

step-by-step explanation:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!