One of the giraffes, Bernard, is sick. Last week he weighed 2,490 pounds. This week he weighs 2,312 pounds. If w represents the amount of weight lost, use the bar diagram to write an equation and find the amount of weight Bernard lost.

A bar diagram. The top bar contains 2,490 and the bottom bars contain 2,312 and w.

The equation used to solve the equation is

The amount of weight Bernard lost is

Step-by-step explanation:

Let

w ----> the amount of weight lost in pounds

we know that

The amount of weight Bernard lost plus the weight of this week must be equal to the weight of the last week

so

The linear equation that represent this situation is

solve for w

subtract 2,312 both sides

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convert the exponential equation to a logarithmic equation using the logarithm base (6) of the right side (36) equals the exponent (2).

ℓσg6(36)=2

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