Aline has a slope of -6 over 7. what is the slope of the line parallel to it? and what is the slope of the line perpendicular to it?

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?