Answer:
a) {(3,3),(3,4),(4,5),(4,6)}
Step-by-step explanation:
Given
(a) to (d)
Required
Which is not a function
A relation is represented as:

For the relation t be a relation, then:
where 
This means that none of the x values must be related.
The first relation has 3 repeated as its value of . Hence, (a) is a relation
Answer:
hmm not sure because you cant rlly solve for anything if there is a number but maybe try a+a=2a? because 2 a's just equal 2a but its still not rlly solving anything but it could work
Step-by-step explanation:
Answer:
187
Step-by-step explanation:
0.75x=165 x=220
220*0.85
I’m not really sure of my answer