Is it an isosceles triangle
The answer to this question has to be D. 42.75 square inches.
a=1 b= c=Step-by-step explanation:
First term: a(1) = 4; common ratio: r = 2
Then:
a(n) = 4(2)^(n-1)
Check: Predict the 4th term using this formula:
a(4) = 4(2)^3 = 4(8) = 32 (correct)
