Apencil at a stationery store costs $1, and a pen costs $1.50. stefan spent $7 at the store. he bought a total of 6 items. which system of equations can be used to find the number of pencils (x) and pens (y) he bought? (5 points)

Hello!

You can make two equations based on what you know

He bought 6 items

x + y = 6

A pencil cost $1 and a pen cost $1.50

1x + 1.50y = 7

This can be simplified to

x + 1.50y = 7

Now you solve the system of equations

x + y = 6
x + 1.50y = 7

You can subtract the equations from each other to get rid of x

-0.5y = -1

Divide both sides by -0.5

y = 2

Put this into one of the original equations

x + 2 = 6

Subtract 2 from both sides

x = 4

He bought 4 pencils and 2 pens

Hope this helps!

31 is prime. and it’s prime factorization is just 31.