How to use "count" in a sentence

Your wife will have to count the sous when she goes to the market, won't she?'

It was true that every dollar had to count, for every dollar of the Network's budget was difficult to come by

There were more video displays than Tina could count at a glance; most were switched on, and data flowed in the form of graphs, charts, and numbers

Do you think I can't count?'

As she walks out of the office, they sing: Count, count, count your blessings.

Count, Mercy, count your blessings Count, Mercy, count your blessings Count, count, count your blessings.