Is the expression 6(2d+ 4f) - 3f equivalent to the expression 8d+ 28f +4d -7f? Explain your answer.
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An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

Find the value of ax 4 ; a = 2, x = 1. select one: a. 2 b. 4 c. 1 d. 8

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?