Part a: : (subtract the polynomials) (show all work) (3-6n^5-8n^4) - (-6n^4-3n-8n^5) (part b: : solve the quadratic) show all work 4x^2-2x-5=0

Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6−6x^4+5 (choice c) 6x^7−x^5+5 (choice d) 6x^5+x^4+7

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?