A pencil at a stationery store costs $1, and a pen costs $1.50. Stella spent $21 at the store. She bought a total of 18 items. Which system of equations can be used to find the number of pencils (x) and pens (y) she bought? (5 points)

Question

x + 18y = 21
x = 1.5y

18x + y = 21
x = 1.5y

x + 1.5y = 21
x + y = 18

1.5x + y = 21
x = 18y

Answer 1

The correct system of equations that can be used to find the number of pencils (x) and pens (y) she bought is:

x + y = 18
x + 1.5y = 21
(y = number of pens purchased, x = number of pencils purchased)

Answer 2

no from the options

A pencil at a stationery store costs $1, and a pen costs $1.50. Stella spent $21 at the store. She bought a total of 18 items. Which system of equations can be used to find the number of pencils (x) and pens (y) she bought? (5 points)

x + 18y = 21
x = 1.5y

18x + y = 21
x = 1.5y

x + 1.5y = 21
x + y = 18

1.5x + y = 21
x = 18y

Answer 3

Apologies for the incorrect response. The correct system of equations should be:

x + y = 18
1x + 1.5y = 21

(y = number of pens purchased, x = number of pencils purchased)