Question

Is the following relation a function? {(0.3, 0.6), (0.4, 0.8), (0.3, 0.7), (0.5, 0.5)}

Answer 1

no because 0.3 is repeated

Answer 2

is that the next question

Sound travels about 343 meters per second. The function d(t) = 343t gives the distance d(t) in meters that sound travels in t seconds. How far does sound travel in 8 seconds? A.)343 meters B.)686 meters C.)2,744 meters D.)3,430 meters For this problem would i just have to multiply 343 by 8 ?

Answer 3

a. yes
b. no
c. not determined

and yes to your question.

Answer 4

b. no its not a function

for the 2nd one
d(t) = 343t
plug in 8 for t