Plz a business assistant must leave more than $50 in the supply account. there is $200 in the account. the assistant needs to order x boxes of pens that cost $10.50 each.
what is the maximum number of boxes of pens the business assistant can buy?

a 10

b 14

c 15

d 23

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