Answer:
It is the first answer
Step-by-step explanation:
For it to be considered a function, each x-value can only corresponds (have) one y-value, however, y-values (even if they are the same y-value) can have multiple different x-values.
Ok, so remember the exponentioal law that says

so

answe ris x^6
90 for the box and 45 for the next angle
Assume you went there for 12 months last year.
Equation:
100 + 12x = 700
Subtract 100 from both sides.
12x = 600
Divide 12
x = 50