I cant solve this pls help

Cara earns a base pay of $1800 per month at a car dealership plus a commission of 6% of her sales. what are caras total earning in a month in which she sells $40000 worth of merchandise

In which source of water would a wave travel the fastest? o ice o cold o room temperature o hot mark this and return save and exit next

What is the fewest number of full weeks briyana would have to work to have enough money? 8 weeks9 weeks 10 weeks11 weeks