The topology taxi company charges 2.80 for the first fifth of a mile and 0.45 for each additional fifth of a mile. find a linear function which models the taxi fare f as a function of the number of miles driven, m .

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

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

b, 20 yards

step-by-step explanation: