Their school of fish once had 450 fish in it but now they only have 360 fish in their school. By what percentage was the population of their school offish reduced?

1.) 2x + y = 3 2.) x - 2y = -1 if equation 1 is multiplied by 2 and then the equations are added, the result is a.3x = 2 b.3x = 5 c.5x = 5

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

Which expression and diagram represent “renee biked four times as far this month as last month”?