In a study of 321 comma 156 cell phone users, it was found that 103 developed cancer of the brain or nervous system. Assuming that cell phones have no effect, there is a 0.000332 probability of a person developing cancer of the brain or nervous system. We therefore expect about 107 cases of such cancer in a group of 321 comma 156 people. Estimate the probability of 103 or fewer cases of such cancer in a group of 321 comma 156 people. What do these results suggest about media reports that cell phones cause cancer of the brain or nervous system? g

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Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.