If the ratio of white pens to green pens is 2 to 8 and there are a total of 30 pens, how many pens are white

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Abag contains 3 red marbles 4 white marbles and 5 blue marbles if one marble is drawn from the bag what is the probability that the marble will be blue

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)