What is the rule that describes this pattern of numbers -10,000; -1,000; -100; -10; -1; -0.1; -0.01; -0.001
A. Each number is one-tenth the number to its right.
B. Each number is one-tenth the number to its left.

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

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

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?