Ihave 2 separate questions i wish to ask. idk if it's possible, may you show how the problem is solved:
1. how many ounces of a 5% solution and how many ounces of a 15% solution must be mixed to get 40oz of a 9% solution ?
2. last year, taz invested a total of $7500 in two accounts earning simple interest. some of it he invested at 9.5% and the rest was invested at 6.5%. how much did he invest in each account if he earned a total of $577.50 in interest last year?

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

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

Use the graph of the sine function y=2sinθ shown below