Which of the following lines are perpendicular to the given line? y=1/2x + 5 a) y= 2x -4
b) y= -2x -10
c) y= 1/2x - 5
d) y= -1/2x+ 5

Charlie is a car salesman he earns $800 plus a 9% commission on all of her sales for the week if charlie receive the payment for $1960 this week how much where is total sales

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10