Question

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?
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

@Hannah_Waller hey can you help me with this please?

Answer 2

no. id understand it.

Answer 3

We knnow it cant be d... right?? @WILD1

Answer 4

yea

Answer 5

ok so we know it cant be d because it has to equal 21

Answer 6

mhm.

Answer 7

what do we do know?

Answer 8

@Hannah_Waller

Answer 9

ok

Answer 10

im thinking c.

Answer 11

does that seem reasonable?

Answer 12

@tylermcmullen23 does my answer seem close?

Answer 13

i was lookinng at that and it almost seems like i woul be it but x is pencils and pencils are 1 dollar and it says 1.5 si idk...

Answer 14

yea. to me it seems reasonable so... well thank you. medal!