Answer:
Is 10cm and 6 cm an option
Petri dish A has 1080000000000000
Petri dish B has 270000000000
Petri dish a is greater by 1.07973E15
Hope that helped :)
43.305 or in Mixed Number is 43 61/200 or in improper Fraction is 8661/200
1 and 11/12 hours I think
Y = -3x + 13
Steps and the graph are on paper