Sibal started with $500 in a bank account that does not earn interest. in the middle of every month, she withdraws 15 of the account balance. which recursive function rule models sibal’s balance at the end of each month?
an=4/5⋅an−1 and a1=500
an=500⋅an−1 and a1=1/5
an=1/5⋅an−1 and a1=500
an=500⋅an−1 and a1=4/5

An electronics manufacturer wants to know if customers would be interested in a detachable keyboard for their tables and if so, what the most important features would be. the manufacturer partners with an electronics store to include copies of the survey with every purchase at that store for one week. which of the following best explains why this random sample is unlikely to be a good representative sample of tablet owners' preferences for a detachable keyboard? a) one week is likely not enough time to get a large enough sample. b) most people won't bother to send in the survey, which is likely to skew the results c) there is no way to verify whether the responders to the survey actually own a tablet d) the survey is biased because it was conducted through an electronics store, not the general population

Jim makes $10.35 per hour. write an equation that jim can use to calculate his pay.

Kerion has a beaded necklace business. she can make 12 necklaces is 2 hours. how long will it take her to make 9 necklaces?