Which planetary body was spirit designed to explore

Why should the scientific method be used to answer a question? a. it provides a way to test an idea without any bias. b. it provides a way to test a hypothesis. c. it provides a way to ensure all hypotheses are proven correct. d. it provides a way to quickly turn a hypothesis into a scientific theory.

Evaluate this exponential expression,8. (2 + 3)2 – 42

A5.00 g of a in . g of at aa 5.00 g of b in . g of .?at .