Write 1.81 as a mixed number and an improper number

Can you simplify 4/7? 24 points will be awarded!

If your annual gross income is $62,000 and you have one monthly car payment of $335 and a monthly student loan payment of $225, what is the maximum house payment you can afford. consider a standard 28% front-end ratio and a 36% back-end ratio. also, to complete your calculation, the annual property tax will be $3,600 and the annual homeowner's premium will be $360.

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a