If cos of 60 is 1÷2 then who do i solve for b÷26=.5?

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

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?