30% off 400 $. PLEASE HELP NOWWW

Thus, a product that normally costs $400 with a 30 percent discount will cost you $280.00, and you saved $120.00. You can also calculate how much you save by simply moving the period in 30.00 percent two spaces to the left, and then multiply the result by $400 as follows: $400 x . 30 = $120.00 savings

Step-by-step explanation:

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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

the answer is 1/4

step-by-step explanation: