Select the best estimate of the product of 18 x 31 =

Really? 600.

Step-by-step explanation:

18 is approximately 20, and 31 is approximately 30, so 20*30=600.

m= 44

Step-by-step explanation:

Substitute value of n, which is 8, into equation to get 1/2m-3/4(8)=16.

Simplify to get 1/2m-6=16.

Add 6 to both sides of equation to get: 1/2m=22.

Multiply both sides by reciprocal of 1/2 which is 2 to get m=44.

Hope it helped.