3 sisters are each 2 years apart in age. the youngest sister is emily, the middle sister is samantha and the oldest sister is lauren. together their combined ages are 42. how old is each sister?
a. define the variable(s).
b. write an equation for this situation using one variable.
c. solve the equation for the ages of the 3 sisters.

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct