Select all expressions that are equivalent to 0.75x + 0.25(x + 12.4) + x – 2.1

A. 2x + 1
B. x + 1
C. x + 3.1 + x + 2.1
D. x + 3.1 + x – 2.1

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Evaluate 3(a + b + c)squared for a = 2, b = 3, and c = 4. a. 54 b. 243 c.729 add solution .

Two florida panthers were weighed. one weighs 6x+21 pounds and the two together weigh 14x+11 pounds how much does he other panther weigh alone