Evaluate \(3.0\times 10^1 - 2.8\times 10^{-1}\)leaving the answer in standard form
A
\(2\times 10^{-1}\)
B
\(2\times 10^{2}\)
C
\(2.972 \times 10^{1}\)
D
\(2.972 \times 10^{2}\)
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
\(3.0\times 10^1 - 2.8\times 10^{-1}\) = 30 - 0.28 = 29.72 = 2.972 x 10\(^1\)
Source: Myschool Past Questions Archive (Record #26376)