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Loading ...Some word problem help here?
Ok here are the problems I need help with
1)A revenue of $1500 is obtained from the sales of item A at $50 each and item B at $25 each. Write an equation that shows the relationship between the numbers of items sold.
2)An airplane trip is traveling away from its home airport at a constant speed. After 3 hours, it is 540 miles away Assuming it departed at t=0, write an equation representing the distance, “D” (in miles), at any time “t” (in hours).
3)A real estate sales agent receives a salary of $250 per week plus a commission of 2% sales. Write a linear model for the weekly income “y” in terms of sales “x”.
4)Machinery is bought new for $36,000 and is considered worth $2,000 as junk at the end of 10 years. Assuming a linear model for depreciation, write the equation of its value, “V” (in dollars), when “t” years have elapsed after the purchase.
Please label your answers with a number to represent the question you are answering. Please explain the answer too.
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wow, this is long. You want someone to do your homework or something? You should do your own homework. Otherwise, you won’t be able to learn.
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OK
1) Let no of itemA = a
Let no of itemB = b
Then 50a + 50b = 1500
2) D = s x t
So 540 = s x 3
3) y = 250 + 2% of x
4) DEP for 1 year = (36000-2000)/10
= 3400
So V =36000 – (3400 x t )
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1. 50A + 25B = 1500, where A is the number of items type A sold, and B is the number of items type B sold.
2. d=distance, t=time, s=speed
d=st (distance equals rate (speed) times time)
3. y = 250 + 0.02x, where x is the dollar value of sales made and y is total income
4. V = 36 – 3.4t, where V is the value in thousands of dollars.
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