Which shows a correct way to solve this problem?

sheri bought 3 books and a magazine at the bookstore. each book cost $9 and the magazine cost $2.

how much did sheri spend at the bookstore?

a.

step 1: multiply 9 × 3.
step 2: add 2 to the product.

b.

step 1: multiply 9 × 2.
step 2: add 3 to the product.

c.

step 1: add 9 + 3.
step 2: multiply the sum by 2.

d.

step 1: add 9 + 2.
step 2: multiply the sum by 3.

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.