Ineed to bring up my grade!

create an expression, to equal 13, using any grouping of addition, subtraction, multiplication, and division. you must use all the basic operations at least once (addition, subtraction, multiplication, and division) and you must use at least three sets of parentheses. you can use exponents if you want as well.

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0

you estimate that the angle of elevation to the top of the 86th floor (the observatory) is 82 .the total height of the building is another 123 meters above the 86th floor.

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