9.285714285714286 645=650 69=70
        
             
        
        
        
Answer:
x = 12
Step-by-step explanation:
5x + 15 = 75
       -15   -15
5x = 60
x = 12
 
        
             
        
        
        
Answer:

Step-by-step explanation:





 
        
             
        
        
        
The formula for the nth term is
a1 + (n-1)d     where a1 = first term and d = common difference
        
                    
             
        
        
        
Assuming compount interest format

 for compounded per 1 year
A=future amount
P=present amount
r=rate in decimal
t=time in years 
given
P=270
r=5%=0.05
the equaton is

 or

for any year, 2009, is year 0, so if you wanted to input the year then

 would be for t=what year it was
A. 

b. 2009 to 2020 
2020-2009=11 years
t=11

f(11)=461.792
about 462 cranes
A. 

B. about 462