Karen has $1.70 in coins. karen has 8 coins, all of which are quarters or dimes.

so can someone me with these 3 parts?

Karen has 6 quarters and 2 dimes

Step-by-step explanation:

Let

x ----> the number of quarter coins Karen has

y ----> the number of dimes coins Karen has

Remember that

we know that

Equation that represent the amount of coins Karen has

isolate the variable y

----> equation A

Equation that represent the value of coins Karen has

----> equation B

Solve the system of equations by substitution

substitute equation A in equation B

solve for x

Find the value of y

---->

therefore

Karen has 6 quarters and 2 dimes

answer:

your answer is: c. 196 7/8 in^3.

a.for lorena 14 hours makes $126   for 16 hours she makes 144

for julie 6 hours makes $72 for 21 hours its $252

b. julie makes more money than lorena julie makes $12 an hour and lorena makes $9  

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