The vector u = (2500, 4900) gives the number of units of two models of laptops produced by a company. The vector v = (1700, 1450) gives the prices (in dollars) of the two models of laptops, respectively. Use dot products to determine the revenue for these two laptops if the price of each is increased by 4%.

A. $11,657,800
B. $11,525,000
C. $11,809,200
D. $11,667,100
E. $11,639,200

Question

The vector u = (2500, 4900) gives the number of units of two models of laptops produced by a company. The vector v = (1700, 1450) gives the prices (in dollars) of the two models of laptops, respectively. Use dot products to determine the revenue for these two laptops if the price of each is increased by 4%.
	
A. $11,657,800	
B. $11,525,000
C. $11,809,200
D. $11,667,100
E. $11,639,200

anonymous · Answer

I guess you should multiply vector v by 1.04 and then dot product it

anonymous · Answer

ok I'll try that thanks

anonymous · Answer

Is it C?

anonymous · Answer

wait do I have to  dot product it  and then multiply it how do I multiply it with just v?

anonymous · Answer

Do 1.04 x 1700 and  1.04 x 1450, this will give you the new price range

anonymous · Answer

Then replace the new values of vector v and times v and u with dot product

anonymous · Answer

oh ok I gotcha I'll try it

anonymous · Answer

I think that's right C thanks so much a lot easier than whatever the heck I was trying to do!