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Systems of Equations Check-point
More practice (page 4)
Two hundred fifteen people have been invited to a reception. The men get a gift of candy that cost $6.95 each, and the women get a gift of flowers that cost $8.95 each. If the
total cost for gifts was $1724.25. how many men and how many women were invited?
Let w = the number of women invited, and let m - the number of men invited.

x = -5

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:

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function