Which equation represents a line that is perpendicular to the line whose equation is y = 4x + 12?

y = 4x + 4
y = -4x + 7
y = (-1/4x) + 1
y = (1/4x) + 9

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)