A chemist has three different acid solutions. The first acid solution contains 15
%
acid, the second contains
30
%
and the third contains
70
%
. They want to use all three solutions to obtain a mixture of
180
liters containing
35
%
acid, using
3
times as much of the
70
%
solution as the
30
%
solution. How many liters of each solution should be used?

The chemist should use
liters of
15
%
solution,
liters of
30
%
solution, and
liters of
70
%
solution.

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

More challenges: 1) factor out the indicated quantity.8mn² + 7mn - m : factor out the quantity -m2) factor the polynomial by grouping.2vw + 7cv + 14cw + 49c²3) factor completely using the difference of squares along with factoring by grouping.25v³ - 25v² - 4v + 44) factor the sum of cubes. 125x³ + 645) q³ + 27r³6) factor completely. use difference of squares.729p^6 - 6^67) solve the equation(7x + 4)(9x - 1) = 08) a. find the values of x for which f (x) = 0b. find f (0)f (x) = x² + 2x - 489) find the x and y-intercepts for the function defined by y = f (x)f (x) = (x + 3)(x + 4)(x - 1)²10) factor the trinomial completely by using any method. remember to look for a common factor first. 3v² - 2v - 16