A function is defined as y = 3x + 5 with a domain of all real numbers greater than or equal to 5. What would be the range of the function?
A All real numbers
B All real numbers less than 20
C All real numbers greater than or equal to 20
D {20, 23, 26, 29, 32,...}

Domain is all real numbers.  

Range is all real numbers.

Step-by-step explanation:

The domain is all the possible x values that are allowed.

The range is all the possible y values that are allowed.

Since this is a linear function, its graph is a straight line stretching from - infinity to infinity on both x and y axes, hence domain and range is all real numbers from - infinity to infinity.

This particular linear function (of form y = mx + c) has gradient m = 3 so slopes up to the right, and y-intercept c = - 5, an hence x-intercept 5/3.

The graph is sketched below and clearly extends indefinitely in terms of range and domain.

graph{3x-5 [-9.71, 10.29, -5.92, 4.08]}

answer: the value of x is 7cm

step-by-step explanation:

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 !