Generally speaking, these are numbers we usually apply in real world

Imaginary numbers, also called complex numbers, are used in real-life applications, such as electricity, as well as quadratic equations.

Step-by-step explanation:

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x