Answer:
you answer should be 37.26666667
Step-by-step explanation:
Answer:
No, function is not one-to-one
No, function is not onto
Step-by-step explanation:
We are given that a function
f:
If function is one-to-one then different x have different image .
Domain =Z
Codomain=Z
When function is onto then range=Codomain
Substitute x=1
Then ,
When substitute x=9
Then , we get
Image of 1 and 9 are same hence, function is not one-to-one.
Negative elements of Z and Zero has no preimage.Therefore, function is not onto.
Answer:
10 times
Step-by-step explanation:
Let x be the amount of times you go to the gym
Option A would be 20+2x
Option B would be 4x
now the question is after how many trips would the cost be the same?
20+2x=4x
Solve the equation so
20=4x-2x
20=2x
X=10
It would take 10 times for the cost to be the same for both options