A.
i did this test already trust me
For 2x^2 + 3x = -1 => 2x^2 + 3x + 1 = 0 => a = 2, b = 3, c = 1
b^2 - 4ac = 3^2 - (4 x 2 x 1) = 9 - 8 = 1
Let y be the total money earned in a day and x be the pairs of shoes sold.
y = 4.5x + 40
Putting y = 112
112 = 4.5x + 40
x = 16 pairs of shoes must be sold to meet the requirement.
