Norachai rented a bike from Adam's Bikes
It cost $20 plus $6 per hour. If Norachai
paid $50 then he rented the bike for how many hours?

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

17 in long 1.3 ft wide and 8in high what is the volume

Find the solution of this system of equation -7x+y=-20 9x-3y=36