Answer: j + 3/8 when j = 3/4 is equal to 9/8 or 1 1/8.
Step-by-step explanation: To evaluate the expression, we substitute j with 3/4:
j + 3/8 = (3/4) + 3/8
We can't add these two fractions because they don't have the same denominator. To add fractions, we need to find a common denominator. The smallest number that both 4 and 8 divide into is 8.
(3/4) + 3/8 = (6/8) + 3/8
Now that we have a common denominator, we can add the two fractions:
(6/8) + 3/8 = 9/8
Therefore, j + 3/8 when j = 3/4 is equal to 9/8 or 1 1/8.