Adoctor ordered 300 ml of a 10% solution, but the pharmacy only has 5% and 25% solutions. how many millimeters of each solution should the pharmacist mix to get the prescribed medication for the man?

We have 5% and 25% solutions and we need 300 ml of 10%.

Setting up 2 equations:

A) x + y = 300

B) .05 x + .25 y = (.10 * 300)  Multiplying A) by -.25

A) -.25x -.25y = -75  Then adding this to B) we get

-.20 x = -45

x = 225 ml .05% and we use 75 ml of 25%

Source: https://www.1728.com/mixture.htm

Step-by-step explanation:

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1