Abox contains 5 plain pencils and 7 pens. a second box contains 4 color pencils and 4
crayons. one item from each box is chosen at random. what is the probability that a pen from the first box and a crayon from the second box are selected?
write your answer as a fraction in simplest form.

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Need on this one asap im almost done with this subject

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer