What is the domain of f(x)=3^x
1 answer:
Answer:
The domain of the function is
Step-by-step explanation:
Given : Function
To find : What is the domain of the function given?
Solution :
Domain is defined as the set of values in which function is defined.
Since, The given function is an exponential function.
In this case there is no real numbers that makes the expression undefined.
i.e. Domain of the given function is from -infinity to +infinity
or
Therefore, The domain of the function is
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Answer:
Area = 370 m²
Cost to paint = £105
Step-by-step explanation:
Area of the wall of a cinema hall = Area of a trapezoid (1)+ Area of a rectangle (2) + Area of a trapezoid (3)
Area of a trapezoid =
where and
are the parallel sides and h is the distance between these sides.
Area of trapezoid (1) =
= 69 m²
Area of the rectangle (2) = Length × Width
= 12 × 15
= 180 m²
Area of the trapezoid (3) =
= 121 m²
Now area of the wall = 69 + 180 + 121
= 370 m²
One tin covers the area = 25 m²
Number of tins required to paint the wall =
=
= 14.8
Therefore, number of tins to be purchased = 15
Cost to paint the complete wall = 15 × £7
= £105
