Question

The function y = 3.25x represents the energy(y) produced by the amount of biomass as a source(x). If y = 8.125, value of x is

• A. 3.5
• B. 2.5
• C. 1.25

Answer 1

The correct option is B 2.5

The given equation is y=3.25x

Given y =8.125

Substitute the value of y in the given equation y = 3.25x

⇒ 8.125 = 3.25x

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> ⇒ x = 8.125 $÷$ 3.25
Multiplying both numerator and denominator by 100,
x = 812.5 $÷$ 325

$$\begin{array}{c}2.5\\ 325812.5\\ -\underset{–}{650}-2\\ 16250\\ -\underset{–}{1625}0\\ 0\end{array}$$
Hence, the value of x = 2.5