Luis was looking at the number 678,743. He compared the 7 in the ten thousands place to the 7 in the hundreds place. Luis said the 7 in the ten thousands place is 10 times bigger than the 7 in the hundreds place. Is he correct? Explain why or why not you agree with him.

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

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Erik buys 2.5 pounds of cashews. if each pound of cashews costs $7.70, how much will he pay for the cashews?