In city lake, researches caught, marked, and released 213 bass. later, they took a sample of 104 bass and found that 13 were marked. estimate the number of bass in the lake.

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Abag contains 10 white golf balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio of white to striped gold balls to remain the same. how many of each should he add?

The cost of a taxi ride includes an initial charge of $2.00. if a 5km ride cost $6.00 and a 10km ride cost $10.00, determine the cost of a 15km ride.