What is the perimeter of the polygon 12 in one side 12 in other side 8 in last side

What is the area of triangle abc if a = 8, b = 11, and c = 15?

The quadratic function h(t)=-16.1t^2+150 choose the graph representation

The scatter plot shows the number of animal cells clara examined in a laboratory in different months: plot ordered pairs 1, 20 and 2, 60 and 3,100 and 4, 140 and 5, 180 what is the approximate predicted number of animal cells clara examined in the 9th month?