Anna can type 123 words in 3 minutes. caroline can type 220 words in 5 minutes . who can type fastest

Caroline

Step-by-step explanation:

Anna : 123 words in 3 minutes 123/3 = 41 words per minute

Caroline : 220 words in 5 minutes...220/5 = 44 words per minute

Caroline is the faster typist <===

the answer is 15% decrease

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