Respuesta :

Answer:

For Ms Ortiz: 50 = 50x+30y

For Mr Donahue 45=30x+30y

C =Substitution

Answer:

Step-by-step explanation:

45 divided by 30=$1.50

x amount of rulers multiplyed by 1.50

45-55=10$

50 pencils for 10 bucks

50 divided by 10 =5

5     5   5   5 5 5 5 5 5 5

five pencils for five dollers   one doller for one pencil

sorry for the spelling errors  this is all i can do the rest is a bit tricky

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