In a parasitic relationship, . A. one organism benefits and the other is not harmed
B. both organisms benefit
C. one organism benefits and the other is negatively affected
D. neither organisms benefits
{ this is for science}

Astudent noticed different gas prices as she drove around town. find the second quartile. $3.31 $3.28 $3.42 $3.35 $3.31 $3.26 $3.38 $3.32 $3.34

At the year's end, a share of ardex industries was worth $49.50. this was $9 less than three times its value at the beginning of the year. what was the price of one share of ardex stock at the beginning of the year?

Mary wants to determine the average height of the plants in her plant collection. she measures them and finds their heights are 8 inches, 7.5 inches, 11 inches, 6.5 inches, and 14 inches. what is the average height of her plants?