Khalid spent Rs 156 out of Rs1200. what percent did he spend?

Write a polynomial that fits the description: a third-degree polynomial with leading coefficient -4

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning