Suppose chocolate is on sale for $0.40 a bar and you have a coupon for $0.20 off your total
purchase. Write a function rule for the cost of n chocolate bar. How much would 20 chocolate bars
cost?

Respuesta :

Answer:

t(n)= .40n-.20

t(20)=.40(20)-.20 so 20 bars costs $7.80



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