Determine whether y varies directly with x. If so, find the constant variation k. 3y = -7x - 18
A. yes; 3
B. yes; -7
C. no
D. yes; 7/3

by definition, an arc subtended by a central angle of some given measure has the same measure. so .

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 think the answer is b

x = -5

step-by-step explanation: