Frações Algébricas - 3* caso
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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
Knowing that x varies directly with y, we know the basic skeleton of the equation is y = mx.
To find m, plug in the known coordinate (8,10), where the x-coordinate is 8 and the y-coordinate is 10.
Then, plug in m to the equation to get y = (5/4)x.
Finally, plug in the y-coordinate 18 to the equation and solve for x!
Your exact answer is x = 72/5. However, if your teacher prefers decimals, then x = 14.4
Hope this helps!
To find m, plug in the known coordinate (8,10), where the x-coordinate is 8 and the y-coordinate is 10.
Then, plug in m to the equation to get y = (5/4)x.
Finally, plug in the y-coordinate 18 to the equation and solve for x!
Your exact answer is x = 72/5. However, if your teacher prefers decimals, then x = 14.4
Hope this helps!