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Answer:
<u>8</u><u>t</u><u>h</u><u> </u><u>term</u><u> </u><u>is</u><u> </u><u>-</u><u>1</u><u>5</u><u>3</u><u>0</u><u>9</u>
Step-by-step explanation:
r is the common difference, r = -21/7 = -3
Beth will pay $ 405.45 for washing machine
<em><u>Solution:</u></em>
Given that, Beth is buying a new washing machine that costs $450
Cost price = $ 450
She has a 15% off coupon
So, she has a discount of 15 % of 450
<em><u>Let us find the discount rate</u></em>
Discount rate = 15 % of 450
Thus discount rate is $ 67.5
<em><u>Therefore, sales price is given as:</u></em>
sales price = cost price - discount rate
sales price = 450 - 67.5 = 382.5
Thus she pays $ 382.5
Now she must pay 6 % sales tax
Let us find the sales tax rate
Sales tax rate = 6 % of 382.5
Thus sales tax rate = $ 22.95
<em><u>How much will Beth pay for the washing machine?</u></em>
Total amount paid by Beth = sales price + sales tax rate
Total amount paid by Beth = 382.5 + 22.95 = 405.45
Thus Beth will pay $ 405.45 for washing machine