Answer:
A
Step-by-step explanation:
Each domain value (x-value) of a function has exactly one range value (y-value).
A function can have two or more domain (x-value) having the same range (y-value)
Graph A shows the different domain value (x-values) having exactly one range value (y-value). No x-value has two different y-values.
Therefore, graph A is a function.
Answer:
x=5
Step-by-step explanation:

cross multiply
45=9x
solve for x by dividing 9 to get x alone
5=x
Answer:
A
Step-by-step explanation:
When you distribute values, 'a' while be multiplied by everything. since there is a plus sign in front of the 'b' then that will not be distributed. so an 'ab' will add the an 'ac' but an 'ad' is still going to subtract away from the equation.
Answer:
Step-by-step explanation: