Answer:
(x^2 + 2x - 21) sq units
Step-by-step explanation:
Area of the shaded region = Area of the larger rectangle - Area of smaller rectangle
Area of the larger region = x(x+2)
Area of the larger region =x^2 + 2x
Area of the smaller rectangle = 3 * 7
Area of the smaller rectangle = 21 sq. units
Area of the shaded region = x^2 + 2x - 21
Hence the required expression is (x^2 + 2x - 21) sq units
<h3><u><em>Answer: The answer is 15</em></u></h3><h3><em><u /></em></h3><h3><em><u /></em></h3><h3><u><em>Step-by-step explanation:</em></u></h3>
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Tripiling time is

t=time elapsed
r=tripling time
P=initial amount
so

when time is measured in minutes
if measured in hours then

or
Answer:
the Rule of 72 is also used to determine how long it takes for money to halve in value for a given rate of inflation
Step-by-step explanation:
sorry idk other question
Answer:
b
Step-by-step explanation: