exam Maths Puzzle Numerical Ability

A car travels on the freeway at an average speed of 54 miles per hour,How many miles does it travel in 3 hours 40 minutes

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I just wanted to be sure I graphed this problem correctly.


Graph points A(-3,2), B(4,0), C(0,-2), D (-3,-1)


Thank you Given 3x^2+(k+2)x=-3, determine the value(s) of k so that the equation has real and equal roots.