mark invested a certain amount at 5 % simple interest per year after 10 year he received an interest of 50000 how much did he invest​

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?

What is fraction that is equivalent to 3/8