A book has an unknown number of pages, if you know Sue read 60 pages the first weekend she had it. She then read 1/3 of the book on the second weekend. Finally, she read the remaining 84 pages on the third weekend. Using this information, how many pages did the book have?

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

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)