churchgirl2005 churchgirl2005

04-04-2020
Mathematics

contestada

2. A cup of coffee costs $2. If the total cost
IS $18, how many cups of coffee were purchased?
a. Write an equation:
b. What is the constant of proportionality?

Respuesta :

abiolatolu90 abiolatolu90

04-04-2020

Answer:

The equation is c=2n

The constant of proportionality is 2

$18 will buy 9 cups of coffee

Step-by-step explanation:

Cost c=2*n

where c is the number of cups

The constant of proportion is 2

If cost is $18, then

18 = 2n

n = 18/2

n = 9

$18 will purchase 9 cups of coffee

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