You are correct, C) 4x = 12.
So, if 4 people are eating 12 pieces of pizza, simply divide 12 by 4 and there's your answer!
12 / 4 = 3 Each person gets 3 slices of pizza.
you don't need to know this for real life situations but for school you do need to know it, i dont know how to do this but here's a link to the same question you have but it's explained on how to solve it
https://www.wyzant.com/resources/answers/499729/fireworks_can_go_up_to_1000_feet_in_around_3_seconds_what_s_is_it_s_average_vertical_speed_in_feet_per_second_and_miles_per_hour
((Also i'm a fellow ARMY as well =) ))
15=3b
15/3 = 3b/b
5= b
Isolate the variable by diving 3 on both sides
z = 7√2 cos(7/8π) + 7√2i sin(7/8π) = 7√2e^(i7/8π)
24 1/2 or 24.5 is the answer
