Mathematics: 8. wayne s windows charges a $40 flat fee to cover travel and expenses plus $25 per hour to wash windows at one building. a function c(h) can relate the cost of washing a building s windows and the number of hours, h, that it takes to wash them. wayne s windows can wash one window pane every 3 minutes. a function h(p) can relate the hours that are needed to wash windows and the number of panes, p, in the windows. which composition of functions describes the cost, c(h( of washing p panes at one building?

8. wayne s windows charges a $40 flat fee to cover

alonnachambon

17.06.2021

Option D

Step-by-step explanation:

Given are two position vectors in two dimension.

They are (8,6) and (15,8)

We have to find the dot product.

We know that if

$a=a1i+a2j+a3k \\b = b1i+b2j+b3k\\a.b = a1b1+a2b2+a3b3$

Here two dimension

Hence dot product = $8(15)+6(8)\\= 8(21)\\= 168$

Option D is right

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