Graph the function f(x) = x2 - 4x – 1. which are approximate solutions for x when f(x) = 0? select three options.
-2.11
-1.86
0 -0.25
0.25
2.11
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Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.