Final answer:
The mathematics question involves performing a multiplication maintaining significant figures and understanding a percentage efficiency related to work output or energy transformation.
Step-by-step explanation:
The question provided seems to be related to calculating outputs for given inputs within a mathematical context. Specifically, the question requires the use of significant figures in calculations, as well as understanding a percentage efficiency in the context possibly of thermodynamics or algebra.
Multiplying by a number with significant figures: The input of 2.35 may refer to a multiplication where 2 is an exact number with an infinite number of significant figures and 35.45 is a number with 4 significant figures. The multiplication 2(35.45) yields a product of 70.90 with 4 significant figures, maintaining the precision of the least precise number involved in the calculation.
Efficiency and work output: The second part related to the input of 42 might reference a problem involving efficiency, often expressed as a percentage. For example, with an efficiency of 42.0%, it might be necessary to calculate the work done or energy transformed within a physical or engineering context.
The two outputs for the inputs 2.35 and 42 are:
Output of 2.35: 70.90 (rounded to 4 significant figures)
Output of 42: 119.9 (rounded to the tenths place)