Problema Solution
The cost to mail a letter is $0.42 for the first ounce and $0.17 for each additional ounce. Make a table of at least four rows. Use table to write an equation for the cost of mailing a letter in terms of the weight in ounces.
Answer provided by our tutors
Ounce Cost
1 | 0.42
2 | 0.59
3 | 0.76
4 | 0.93
slope = rise/run = (0.93-0.42)/(4-1) = 0.51/3 = 0.17
y-intercept = 0.42
equation (x is the number of ounces):
cost = 0.17x + 0.42
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