Combine the like terms to create an equivalent expression. (plz .)
7n + 4n
(first one who answers get marked as brainliest. but others will still be appreciated for , and all will get a 5 star rate, and if right.)

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

One hectometer is a) 1/1000 of a meter. b) 1/100 of a meter. c) 10 meters. d) 100 meters. e) 1000 meters.

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.