If you work for an hourly wage, your gross pay is a function of the number of hours that you work. your hourly wage is $8.50 per hour. let n represent the number of hours worked and f(n) represent the gross pay. write an equation for f(n) in terms of n.
a. f(n) =8.5n
b. f(n)= n/8.5
c. f(n)= n+8.5
d. f(n)= 8.5/n

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

i believe a. 12x≥120 is the answer