Answer:
90, B
Step-by-step explanation:
3 x 3 = 9
3 x 3 = 9
6 x 3 = 18
6 x 3 = 18
6 x 3 = 18
6 x 3 = 18
9 + 9 + 18 + 18 + 18 + 18 = 90
The book case can hold a total of 240 books if it can hold 30 books on each shelf
Y = -5/4x + b is the equation that represents a line that is perpendicular to the line 5y-4x=-15
If you want it in standard form, it is 5x+4y=-15
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x + 2x + 9y - 7y
3x + ( 9y - 7y )
3x + 2y
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You have to label it but try 1 and 1/4, -1 and 1/4,2, and -2