Write the equation in point-slope form of the line that contains the points (3,-5) and (5,- 1)

Suppose that in 2008 , 840,800 citizens died of a certain disease assuming the population of teh country is 399 miliion, what is the mortality rate in units of deaths per 100,000 people?

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?

If the tip varies directly with the number of guest which equation represents between the tip,t, and the number of guest,g?