Help me with this hw plz

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

Julie was able to walk 16 km through the zoo in 6 hours. how long will it take her to walk 24 km through the zoo?

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read