Answer:
20
Step-by-step explanation:
The questions asks about Combinations of Pizza toppings, so by employing the Combination Formula:


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In the age group 13-18 23 people liked adventure or biography
Step-by-step explanation:
#7
the composite function from K to F :
(F o C) (x) = 9/5 (x - 273.15) + 32 (option D)