Nick and his cousin Sara have the same birthday, but Nick is four years older than Sara. Let the variable x represent Nick's age and y represent Sara's age. Which graph represents the relationship between Nick's age and Sara's age?

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?