Find the fourth, sixth, and thirteenth terms of the sequence described by each
explicit formula.
15. a(n) = 6 + (n - )
16. a(n) = 12 + (n - 1)(5)
17. a (n) = -2.2 + (n - )
18. a(n) = 5 + (n - 1)(0.5)
19. a(n) = -3 + (n - 1)6)
20. a(n) = -7.6+ (n 1)(3)

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

To find the extreme values of a function f(x. y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x, y)=xy

Taylor wants to paint his rectangular deck that is 41 feet long and 24 feet wide. a gallon of paint covers about 350 square feet. how many gallons of paint will taylor need to cover the entire deck? round your answers to two decimal places when necessary.