Solve the following system by graphing.

x - y = 4
x + y = 2

what is the solution of the system?

(3, -1)
(3, 1)
(-1, 3)

1. what is the phythaforean theorem? 2.what do we use it for? 1.what is the distance formula ? 2.what do we use it for?

Asphere has a diameter of 10 in. what is the volume of the sphere?

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years