Convert 42 inches to centimeters

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?