John purchased 1/4 pounds of hamburger for and $0.75 how much does a hamburger cost per pound

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

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 many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.