What is the equation of the function that is graphed as line a?

y = 3 x + 1
y = 1/3x - 1
y = 3 x - 1
y = -1/3 x + 1

What is the slope of line a?
-1/3
3
-3
1/3

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

Wrote and expression for the difference of p and 4

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.