3x +3 + x = -1
4x= -4
X= -1
Answer:
graph of exponential rising up to the right, through the point 0, negative 2
Step-by-step explanation:
I graphed the function on the graph below so you can see that it rises to the right and goes through the point (0,-2).
780, or C, is correct. Since 9.75 is 1/80th of the actual measurement, we can set up an equation like this:
9.75 = 1/80x
Then multiply each side by 80:
780 = x
The actual building's height is 780 ft.
We can check this answer by plugging in 780 for x in the original equation:
9.75 = 1/80(780)
9.75 = 9.75
Check! <span>✓</span>
they are equal or congruent because if you look at it they both are right triangles
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➷ A variable is an unknown number that is represented by a letter, for example, x.
It is usually found in an algebraic expression.
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TROLLER