(geometry)lian is making a banner for the school gym. she cut three pieces of fabric into congruent isosceles triangles, as shown.
trigonometric area formula: area = 1/2absin(c)
to the nearest square inch, how much fabric will she use to make all three triangles?
139 square inches
172 square inches
417 square inches
515 square inches

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.