Y= 4n – 3d
n = 2
d = 5
(b) work out the value of y

4n-3d=Y

n=2 and d=5

all you do is plug it in.

in this case, 4n=4(2) which is 8

-3(5) is -15

8-15 is -7

I hope this helps.

i think 5 miles per hour

step-by-step explanation:

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