Geographers use negative numbers to represent points below sea level and positive numbers to represent points above sea level. a penguin dove 3.5 meters below sea level to catch dinner for his kids, who are sitting on an iceberg 12 of a meter above sea level.
what is the difference in elevation between the penguin and his kids?

a
2 meters
b
1 meter
c
3 meters
d
4 meters

Danielle has $127.02 in her account before making any transactions. over the course of a week, danielle makes the following transactions: transaction debit ($) credit ($) birthday check 75.00 night out 66.14 garage sale proceeds 121.58 charitable donation 42.25 doctor’s appointment 115.30 at the end of the week, how much money is in danielle’s account? a. $99.91 b. $27.11 c. $184.41 d. $142.16 select the best answer from the choices provided a b c d

Don't know how to find x given these segment lengths

Can someone me out here number 4 plz