How do I find a good estimate on the amount of area that would be covered if the brown decking around the pool is repainted?

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

answer is 1

step-by-step explanation:

the answer is d.x= 90°

y= 50°

arc lm= 100°

i got this one chief