What is the area of the base in the figure below? A cylinder with height 12 and diameter 6. 9 square units 9 pi square units 72 square units 72 pi square units

1. are the triangles similar and if so why? what is the value of x? show your work.

Which of the following exponential functions goes through the points (1, 6) and (2, 12)? f(x) = 3(2)x f(x) = 2(3)x f(x) = 3(2)−x f(x) = 2(3)−x

Carli has 90 apps on her phone. braylen has half the amount of apps as theiss. if carli has three timesthe amount of apps as theiss,how many apps does braylen have? let b represent the number of braylen's apps and t represent the number of theiss's apps.