Paco's autowash earns revenues of $9 per customer. in all, how many customers does paco's autowash need to serve in order to have a total of $27 in revenue?

9/10 divide by -3/15 as a mixed number

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z

Can anyone with some algebra 1 homework? : )