An adult ticket to a museum costs $3 more than a children’s ticket. when 200 adult tickets and 100 children’s tickets are sold, the total revenue is $2100. what is the cost of a children’s ticket?

5$

Step-by-step explanation:

Lets call the childrens ticket x and the adult (x+3).

We then have the equation

200(x+3) + 100(x) = 2100

Divide all by 200

(x+3) + 1/2(x) = 10.5

Subtract 3

x + 1/2x = 7.5

Rewrite it

1.5x = 7.5

Divide by 1.5

x = 5

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation: