Domain and range and function Choices for domain are

X | X greater than 0 or

X | x greater than or equal to 0 or

All real numbers

Square bracket 0 infinity

Parenthesis negative infinity positive infinity

Range

Y | Y greater than 0 or

Y | Y greater than or equal to 0 or

All real numbers

Square bracket 0 infinity or

Parenthesis 0 infinity or

negative infinity positive infinity

Function 1 to 1 , onto both 1 to 1 and onto

Or neither 1 to 1 nor onto

And discrete , continuous or neither continuous nor discrete

j×n×k×s×k×s×k×s×j×d×n×m×d×n×f×n×j×j×d×j×d

step-by-step explanation:

the true ones are a b and d

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !