Suppose a laboratory has a 31 g sample of polonium-210. the half-life of polonium-210 is about 138 days. a. how many half-lives of polonium-210 occur in 966 days? b. how much polonium is in the sample 966 days later? 7; 4.43 g 7; 2,139 g 7; 0.24 g 8; 0.12 g

What is the perimeter of square abcd? units units 28 units 37 units

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?