A baby weighed 6 pounds 9 ounces at birth. How much did it weigh in grams, correct to the nearest tenths?

Sure, here are the steps to convert the baby's weight from pounds and ounces to grams:

1. First, we need to convert everything to the same unit. In this case, we'll convert pounds to ounces since we know the conversion rate for ounces to grams. There are 16 ounces in a pound, so the baby's weight in ounces is 6 pounds * 16 ounces/pound + 9 ounces = 105 ounces.

2. Next, we convert ounces to grams. There are approximately 28.3495 grams in an ounce, so the baby's weight in grams is 105 ounces * 28.3495 grams/ounce = 2976.6975 grams.

3. The problem asks for the weight correct to the nearest tenth of a gram. So, we round 2976.6975 grams to the nearest tenth to get 2976.7 grams.

So, the baby weighed approximately 2976.7 grams at birth.