A box of cards has 12 birthday cards. Each card weighs 2 ounces. How much do the 12 cards weigh? A. 1 pound 4 ounces
B. 1 pound 8 ounces
C. 2 pounds 4 ounces
D. 2 pounds 8 ounces

The figure shows two right trapezoids. trapezoid a b c d has right angles at b and c. angle b is adjacent to the shorter parallel side. angle c is adjacent to the longer parallel side. angle a is obtuse. angle d is acute. sides a b and c d are parallel. the sides in order of length from shortest to longest are b c, a d, a b, and c d. trapezoid r s p q has right angles at s and p. angle s is adjacent to the shorter parallel side. angle p is adjacent to the longer parallel side. angle r is obtuse. angle q is acute. sides r s and p q are parallel. the sides in order of length from shortest to longest are s r, r q, r s, and p q. the two figures shown above are congruent. identify the corresponding sides and angles.