Question

Courtney adds 2 dimes,3 quarters,and 6 nickels into a money jar. courtney the takes out 2 quarters and 5 dimes the next day.write an expression that shows how the overall amount of money in the jar increased or decreased.Then simplify the expression
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Answer 1

Write an expression for the amount she added:

Dimes: 2(0.10)

Quarters: 3(0.25)

Nickels: 6(0.05)

Now write an expression for what she took out:

Quarters: 2(0.25)

Dimes: 5(0.10)

Now combine them:

2(0.10) + 3(0.25) + 6(0.05) - 2(0.25) - 5(0.10)

Simplify:

0.20 + 0.75 + 0.30 - 0.50 - 0.50

1.25 - 1.00 = 0.25 increase.

Answer 2

Answer:

-2q+6n, or 0.2

Step-by-step explanation:

d=dimes

q=quarters

n=nickels

2d+3q+6n-2q-5d=-2q+6n

-2(.25)+6(5)=-0.2