If n+10=40,then what is the value of the expression n-25

Find the slope of a line given the following two points

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

Abag contains 5 red marbles , 6 blue marbles and 4 green marbles. susie selects a marble and returns it to the bag before selecting another marble. if susie selects a red marble 6 out of 20 times, what is the experimental probability that the next marble she selects will be a red marble ?