13. mentally estimate the total cost of items that have the following prices: $1.85, $.98, $3.49, $9.78, and $6.18. round off your answers to the nearest half-dollar.

Orly uses 2 cups of raisins for every 12 cups of trail mix she makes. how many cups of trail mix will she make if she uses 8 cups of raisins?

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.