For the first number, 4.307,
your answer was four hundred thirty thousandths. This choice would indicate that the numbers 3 and 7 would be next to each other. However, we can see that there is a 0 in between, which makes it incorrect. Choice four would be the correct choice for this number. For proof, the last part of the equation says 7 x 1/1000. This is equal to 0.007, and 4.307 is the only possible choice that includes this value.
For the second number, 43.07,
your answer was the expression that I'm not even gonna bother typing lol. We see that the first part of the expression is 4 x 1. That equals 4, and that number, when added to the other values in the expression, is nowhere near 43, which makes the choice incorrect. The correct choice would be the expression in the left blue box on the bottom. For proof, the first part says 4 x 10, which is 40. 43.07 is the only number here that includes this value.