Question

Please help!!
write a function rule to represent the sequence
0.3,0.9,1.5,2.1...
a. A(n)=0.6+(n-1)0.3
b. A(n)=0.6-(n)0.3
c. A(n)=0.3+(n-1)0.6
d. A(n)=0.3+(n+1)0.6

Answer 1

Just test out the equations and see what works. Answer (a) is incorrect because
\[0.6+(1-1)0.3=0.6 \neq 0.3\]

Answer (b) is incorrect because for n=2, \[0.6-2 \cdot 0.3 = 0 \neq 0.9\]

Answer (d) is incorrect because for n=1, \[0.3 + (1+1)0.6 = 1.5 \neq 0.3\]

Therefore, the only valid option is (c).

Answer 2

write a function rule to represent the sequence
47,32,17,2

a. A(n)= 47 +(n - 1)15
b. A(n)= 47 +(n - 1)(-13)
c. A(n)= 47+(n - 1)(-15)
d. A(n)= 32 + (n - 1)15

Answer 3

That was the last one