Answer:
6 
Step-by-step explanation:
Use the triangle area equation

plug in the base (4ft) times the height (3ft) then divide by two
D. the area of the new circle is 16 times larger
Hope this helps :)
Answer:
x
Step-by-step explanation:
We let x be the number of tickets that Sara and Jake sold individually. With this representation, the number of tickets sold by Cole is equal to 2x+6.
(a) x + x + (2x + 6) = 538
The value of x from the generated equation is 133.
(b) Sara sold a total of 133 tickets.