Ayush buys 2 travel mugs that each have an original price of 19.80. He uses a coupon for 15% off. How much does Ayush pay for 2 travel mugs? A. 2.97

B. 5.94

C. 16.83

D. 33.66 please help

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step-by-step explanation:

step-by-step explanation: 4 cause 2+2=4

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