The Hiking Club is on a trip to hike up a mountain. The members increased their elevation 290 feet during their hike this morning. Now they are at an elevation of 450 feet.

a. Explain how to find their elevation before the hike.

b. Han says the equation e + 290 = 450 describes the situation.
What does the variable e represent?

C. Han says that he can rewrite his equation as
e = 450 + -290 to solve for e. Compare Han's strategy to your
strategy for finding the beginning elevation.

Step-by-step explanation:

A. Subtract 290 from 450, 450-290= 160

B. The variable e represents the elevation before they started the hike

C. 450+-290= 450-290

3; 9 is 8 to -4

step-by-step explanation:

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: