If 12 is replaced with 3 in the following set what will happen with the value of the range 28,45,12,34,36,45,19,20

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

Given the sequence 7, 14, 28, 56, which expression shown would give the tenth term? a. 7^10 b. 7·2^10 c. 7·2^9

The price of a dozen eggs was $1.63. suppose the price increases m dollars per dozen and then the price decreases $0.12 per dozen. which expression represents the current price of eggs after the two price changes?