Well, function is already written in "function notation" though not explicitly which I assume is "function notation".
Explicit notation for this function is:

Hope this helps.
I can’t see it well what does it say ?...
(16^3 + 16x^2 + 19x + 12) / (4x + 3). Start by factoring the numerator.
(4x + 3) (4x^2 + x + 4) / (4x + 3). Since (4x + 3) is a term in both the numerator and the denominator, we can cancel them out.
You're left with: 4x^2 + x + 4.
6 lessons per week multiplied by the number of weeks in a year
6 x 52 = 312
total - 5 missed
312 - 5 = 307 dance lessons
Step-by-step explanation:
Y= -5x would be your answer