Graph y = -1.4^x. What is the domain and range of the function. Pick two answers. *

domain: all real numbers
domain: x20
domain: xso
range: all real numbers
range: yso
range: y=0
range: y>0
range: y20

sorry, i'm new here and i'm just trying to figure this out. try quizlet. rate 5* you!

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

step-by-step explanation:

i found the koficent of the linear function and i foun c acordind to the strict formula y=kx+c and then i took 2 as an x and replacet it on the formula i found and then foun the y