Juan is enlarging a photo that has a length of 4 in and a width of 6 in. He would like to enlarge the picture by a scale factor of 3. What is the perimeter of the new picture?

Is a deceasing linear model or an exponential decay model likely to be a better fit for the data about remembering? ?

Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?