Which of the following relation are functions a{(2,1)(5,1)(8,1)(11,1)(14,1)(17,1)
b.{(2,1)(4,2)(6,3)(8,4)(10,5)(12,6) (14,7)
c.{1,3)(1,5)(2,5)
write the domain and range also

the answer is b I took the test

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse

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