Answer:
2530
Step-by-step explanation:
First Round each number to the nearest 10s
503 into 500
472 into 470
499 into 500
539 into 540
522 into 520
then add the numbers we made
500+470+500+540+520=2530
the real answer is 2535 so its close
Answer:
-d - 9 < 1.5
Step-by-step explanation:
In this problem, my reasoning is shown below for each individual inequality. We can test each one to see if it is true or not.

-23 is not greater than 1.5, so it can't be the first one. Let's try the next one.

Yes! -23 is smaller than 1.5. So we can say that the second option is correct. But just for good measure, we can try the other two.

Nope! -23 is not greater than 1.5. Let's try the last one.

And again... nope. 5 is not smaller than -1.5. So our reigning option is -d - 9 < 1.5. Hopefully this was helpful! If you have any more questions, let me know.
Answer:
No,yes,yes,no,yes
Step-by-step explanation: