question_answer

From 2012-2016, the amount (in crores) spent on natural gas N and electricity E by Indian residents can be described by the following expressions, where t is the number of years since 2012. Gas spending model, \[N=2.13{{t}^{2}}-4.21t+37.40\] Electricity spending model, \[E=-0.209{{t}^{2}}+5.393t+307.735\] What is the total amount A spent on natural gas and electricity by Indian residents from 2012 to 2016?

A)  \[1.467{{t}^{2}}+7.423+121.721\]

B)  \[1.339{{t}^{2}}-8.729t+76.245\]

C)  \[1.01{{t}^{2}}+7.083+97.83\]

D)  \[1.921{{t}^{2}}+1.183t+345.135\]