The express meal at a restaurant includes 1 soup, 1 pizza, and 1 dessert. there are 5 types of soups, 2 types of pizzas, and 3 types of desserts to choose from. how many different express meals are possible?

a) 15
b) 20
c) 30
d) 10

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°