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The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Samantha is growing a garden in her back yard. she spend $90 setting up the garden bed and buying the proper garden supplies. in addition, each seed she plants cost $0.25. a. write the function f(x) that represents samantha's total cost on her garden. b. explain what x represents. c. explain what f(x) represents. d. if samantha plants 55 seeds, how much did she spend in total?