consider the following situation: Mr. Richards wants to buy disposable masks for his family. Elure masks cost $1.50 and white masks cost $2.50. He has $45 to spend and wants to buy a total of 20 masks. 12. Define your variables and write an equation to represent the number of masks Richards is buying. 13. Using the same variables write an equation to represent the cost of the masks Richards is buying. 14. Choose either substitution or elimination and solve the system of equations you have created to determin many of each color Richards can buy. Show all of your steps.​

step-by-step explanation:

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is

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step-by-step explanation:

22.83 repeating

step-by-step explanation:

137 ÷ 6 is 22.8333333 therefore we understand that 3 is repeating.

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