The time, you need to type a certain paper varies inversely with the rate, r, that you can type, when typing 40 words per minute, you can finish 50 minutes. Find the constant of proportionality and write an equation relating r.

Kathy spent 5/8 of her money on books and another 1/6 of her money on stationeries. what fraction of kathy’s money was left?

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.

Extra points! find the missing dimension! need asap