Denise walked 4 blocks from her house to the bus stop. She rode the bus 17 blocks to the post office. Later, she came home the same way. How many blocks did Denise travel in all?

42 blocks

Step-by-step explanation:

4 +17 = one way

The answer= there and back

4+17=21

21 x 2 = 42

use formula for the circle a=3.14

step-by-step explanation:

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.