A scientist mixes x liters of water into a container that has 10 liters of a mixture that is 12% salt and 88% water. The function f(x) = 1.2 / (x+10) represents the percent of the sat in the new mixture. How many liters of water must be added to make 1% salt mixture

Using the function given, the amount of water thst must be added to make 1% salt mixture is 110 litres.

The percentage of salt mixture is represented by the function :

The equation can be expressed thus :

Cross multiply :

(x + 10)(0.01) = 1.2

0.01x + 0.1 = 1.2

0.01x = 1.2 - 0.1

0.01x = 1.1

x = 1.1 ÷ 0.01

x = 110

Hence, 110 litres of water must be added.

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110 liters of water

Step-by-step explanation:

Let

x ----> liters of water

f(x) ---->  the percent of the sat in the new mixture

we have

For

substitute in the equation

solve for x

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: