Answer:
8
Step-by-step explanation:
The measure of an inscribed angle is half the measure of the intercepted arc.
m<T = (1/2)m(arc)SU
9x - 25 = 47
9x = 72
x = 8
Answer: x = 8
Multiply 2.5 by 18 to get 45, which is the answer. 45 yards of ribbon for 18 balloons
X^3+3x^2+5x+8/x+1
multiply the whole equation by x
x^4+3x^3+5x^2+8+1x
x^4+3x^3+5x^2+x+8
factor out by parts
(x^2-0.641604x+1.33244)(x^2+3.6416x+6.00403)
we have that

using a graph tool
see the attached figure N 1
for f(x)=$30
the number of years x is equal
x=10.47 years
the answer in the attached figure N 2