Without looking to hard, I believe the answer is C. 9to10 cm
Answer:
78 quarters
Step-by-step explanation:
I think because, I created an equation, 5x = 390 and solves to get 78
S5=10 means the 5th number is 10.
So the arithmetic sequence is s1, s2,s3, s4, 10
Percent increase
find increase first
10500 to 11300
11300-10500=800
so
percent increase
change/original
origianal=10500
change=800
800/10500=8/105=0.0761
percent means parts out of 100
0.0761/1 times 100/100=7.61/100=7.61%
rond 7.61% to tenth or to 7.6%
7.6%