Mark had to place 1 penny in the first bag. he would place 2 pennies in the next bag, 4 pennies in the bag after that, and 8 pennies in the following bag. mark wa to follow the same pattern placing pennies in just 21 bag. how many pennies did mark place in the 21st bag? how much money did he recieve

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?