Question 598174
Hi, there--
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[I] Define your variables
Let p be the number of pennies
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[II] Create an equation showing the given relationships
The value of two $1 bills is 2*1.00, or $2.00.
The value of nine quarters is 9*.25, or $2.25.
The value of 3 dines is 3*.10, or $.30.
The value of the pennies is (p)*(.01), or 0.01p.
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The value of Emily's money all together is $4.62. The equation is
{{{4.62=2.00+2.25+.30+0.01p}}}
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[III] Solve the equation for p.
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Simplify.
{{{4.62=2.00+2.25+.30+0.01p}}}
{{{4.62=4.55+0.01p}}}
{{{4.62-4.55=0.01p}}}
{{{0.07=0.01p}}}
{{{0.07/0.01=p}}}
{{{p=7}}}
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Emily has 7 pennies.
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I hope that helps. Feel free to email via gmail if you have questions about my solution.
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Ms.Figgy
math.in.the.vortex@gmail.com