Slope intercept form x+y=0

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work

In a timed typing test lara typed 63 words per minute.estimate the number of words she should be able to type in half in hour show your work