A bicycle is on sale at a 15% discount. The sale price is $680. What was the original price?

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

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