Answer:
Option A is correct answer
We want to determine the domain of

any function of the form

is called an "exponential function",
the only condition is that b is positive and different from 1, and a is a nonzero real number.
The domain of such functions is all real numbers.
That is for any x, the expression <span>3(2^-x) "makes sense".
Answer: </span><span>The domain is all real numbers</span>
Answer i am not sure wht it is srry
Step-by-step explanation:
Answer:
x=21°. :Angles subtended by the same arc
y=42°. :180-(117+21),angles subtended by the same arc
48 ten units and 1 five unit.