David hikes 2 1/4 miles in 1/2 an hour. what is his rate in miles per hour?

Find the balance at the end of 4 years if 1000 is deposited at the rate of

Need same math paper but the back now i hope your able to read it cleary i need with hw

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.