Write the equation for the first sentence of this problem.

to paint his house, samuel bought 2 cans of paint and one roller for $30. when friends came over to , he went back to the store and bought three more cans of paint and two more rollers for $50.

let x = cans of paint
let y = rollers

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

Icould really use some with this question.

X+ y = 5 ; x - y =3 solve using linear combination