Last year, Ravi had $10,000 to invest. He invested some of it in an account that paid 6% simple interest per year, and he invested the rest in an account that paid 5% simple interest per year. After one year, he received a total of $580 in interest. How much did he
invest in each account?

After reading 80% of her e-mails in her inbox, danette still has m unread e-mails. which of the following expressions could represent the number of e-mails danette had in her inbox before she started reading? choose 2 answers: (choice a) 5m (choice b) 1.8m (choice c) 80m (choice d) m/0.8 (choice e) m/1−0.8