Anonyme Anonyme Today at 11:46 PM Mathematics Answered Mary has 18 marbles. If Tim has 5 times as many marbles as Mary, which number sentence shows how many marbles Tim has? A. 5 × 18 = 90 B. 18 + 5 = 23 C. 18 × 18 = 324 D. 5 × 5 = 25