Elsa earns 46 dollars each week working part-time at a bookstore. She earns one additional dollar for each book that she sells.
Let A be the amount (In dollars) that Elsa earns in a week if she sells B books.
Write an equation relating A to B. Then use this equation to find the amount of money Elsa earns if she sells 21 books.
Equation:
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5
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Amount Elsa earns if she sells 21 books: dollars

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step-by-step explanation:

d = distance between moon and sun, which in this problem is the hypotenuse of a right triangle.  

the distance y is the side opposite to angle x in the right triangle.   use the definition of the sine function from basic trigonometry.

sin(x) = y/d ⇒

d = y/sin(x)

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.