kelly is knitting a scarf for her brother. it took her 1/3 hour to knit 3/8 foot of the scarf. how fast is kellys knitting speed?

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

Can any one me with the answers to these questions asap?

What is the 12th term of b(n)=-4-2(n-1)