Ineed asap
grandma bakes the world's best and favorite cookies. grandma's cookies have a half-life of 2 hours. one day, grandma baked a lot of cookies. if 2 days and 6 hours later, 2 cookies still remain, how many cookies did grandma make?
a) 3.6 × 10^16
b) 4 dozen cookies
c) 268,435,456 cookies
d) 153 cookies

In the figure below, segment ac is congruent to segment ab: which statement is used to prove that angle abd is congruent to angle acd? a.)triangle acd is similar to triangle abd. b.)triangle acd is congruent to triangle abd. c.)segment a.d. is congruent to segment ac. d.)segment a.d. is congruent to segment dc.