What is the product? (x^4)(3x^3-2)(4x^2)(4x^2+5x) (A 12x^9+15x^8-8x^6-10x^5 (B 12x^24+15x^12-8x^8-10x^4 (C 12x^9-10x^5 (D 12x^24-10x^4

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a. the profit when the unit price is equal to 0b. the unit price(s) when the profit is equal to 0c. the profit when the unit price is greatestd. the unit price(s) when profit is greatest

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Iknow the answer but the calculator doesn't seem to give the right one