15. In the figure, AABC 2 AAFD. AABC is equilateral and the mZC = 167 - 52°.
What is the value of y? Figure not drawn to scale.
B
С
2x + 9
8r - 15
D
F
A y = 16
B
y = 8
С
y=4
Dy = 5

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours

Abucket of paint has spilled on a tile floor. the paint flow can be expressed with the function p(t) = 6(t), where t represents time in minutes and p represents how far the paint is spreading. the flowing paint is creating a circular pattern on the tile. the area of the pattern can be expressed as a(p) = 3.14(p)^2 part a: find the area of the circle of spilled paint as a function of time, or a[p(t)]. show your work. part b: how large is the area of spilled paint after 8 minutes? you may use 3.14 to approximate pi in this problem.