Question

fred's weekly earnings for mowing lawns can be represented by the function f(x) = 45x - 40, and george's weekly earning for delivering papers can be represented by the function g(x) = 85x - 110. fred says that after 3 weeks they will have earned the same amount. determine whether fred is correct. explain.

Answer 1

Nope. Fred's earned value after 3 weeks is $95 and George's is $145.

Explanation:

Fred:

Substitute x with 3.

45(3)-40

Solve.

= 135-40

= 95

George:

Same as before, substitute x with 3.

85(3)-110

Solve.

= 255-110

= 145

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95 does no equal 145.