B) write down the reciprocal of 7.

1/7

Step-by-step explanation:

The product of reciprocals is 1.

The reciprocal of a number is 1 divided by the number.

If the number if a fraction, just flip it. If the number is not a fraction, write it as a fraction by writing it as a fraction over 1, then flip it.

Examples:

The reciprocal of 5 is 1/5. Write 5 as 5/1. Flip it to 1/5.

The reciprocal of 11 is 1/11. Write 11 as 11/1. Flip it to 1/11.

The reciprocal of 4/5 is 5/4.

The reciprocal of 1/15 is 15/1 which is simply 15.

Your problem:

The reciprocal is 7 is 1/7.

1) c 2143.6 cm

2) c 113.0 m

3) a 33.5 ft

4)   d 2 cm

5) c 20 mm

6) 180 in

7) d 120 ft

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.