Answer:
$140.48
Step-by-step explanation:
Let x represent dialed units.
We have been given that a quarterly telephone bill consist of $79.15 rental plus 4.7 cents for each dialed unit.
4.7 cents = $0.047
Cost of dialing x units would be @@MATH_TOKEN_0@@.
Total cost of dialing x units would be @@MATH_TOKEN_1@@.
Let us find cost of dialing 915 units by substituting @@MATH_TOKEN_2@@ in above expression.
@@MATH_TOKEN_3@@
@@MATH_TOKEN_4@@
@@MATH_TOKEN_5@@
Now, we will find 15% of sales tax as:
@@MATH_TOKEN_6@@
@@MATH_TOKEN_7@@
@@MATH_TOKEN_8@@
Total bill: @@MATH_TOKEN_9@@
Therefore, Mrs. Jonas's bill would be $140.48.
