Im unsure how to do sigma abc (you can ignore the other ones, just need sigma abc) !

Use the distributive law to multiply. 3(4x + 5y + 6)

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

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?