Which of the following is the equation for a line in slope intercept form that has a slope of 6 and passes through the coordinate (6, 7)?

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?

(25 ! ) what does it mean for an equation to have no solution or infinitely many solutions?

Last year, laura had $30,000 to invest. she invested some of it in an account that paid 7% simple interest per year, and she invested the rest in an account that paid 8% simple interest per year. after one year, she received a total of $2230 in interest. how much did she invest in each account?