Question

Evaluate 2r + 1 if r=3

Answer 1

Explanation:

We have,

• r = 3

`\sf 2r+1`

Put the value of r,

`\longmapsto \sf 2(3)+1`

`\longmapsto \sf 6+1`

`\longmapsto \sf 7`

Answer 2

7

Explanation:

2r + 1

Let r = 3

2(3)+1

6+1

7