Amy is doing a science experiment on how a certain bacterium reacts to an antibiotic. she has 3 dishes of identical bacterium samples with 12 bacteria in each dish. she gives an antibiotic to all of the bacteria in one dish. all of the treated bacteria died, and the bacteria in the other two dishes survived. identify the sample size in the situation above. a. 3 b. 12 c. 36 d. 24

When you arrive at the lake, your friend realises he hasn’t got any swimming trunks. you need to ride to a sports shop. the sports shop is 8350 metres away. how many metres is it to cycle there and back?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.