Chapter 2.5, Problem 50PP

Write the equality and two conversion factors, and identify the numbers as exact or give the number of significant figures for each of the following:
a. One titer is 1.057 qt.
b. At the store, oranges are $1.29 per lb.
e. There are 7 days in 1 week.
d. One deciliter contains 100 mL.
e. An 18-carat gold ring contains 75% gold by mass.
f. One square foot is 144 in.²