D would equal a/b times c
The sum is adding
3 times a number is 3x
And 15 is +15
3x+15
7.4 is your final answer, hope that help, one decimal place is the first number after the decimal.
Answer:
b is not a function
Step-by-step explanation:
To be a function there must be a one to one correspondence.
Each x must only go to one y
b has an x that goes to two different y's
1 goes to 5 and 13. That makes it a relation not a function
