exam Maths Puzzle Numerical Ability

Find the values of each of the following polynomials for the given values of the variable.

-xsquared -5x-6
x = -3 and x = -2

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how do i work this out??
A bus leaves a station at 1 P.M., traveling west at an average
rate of 44 mi/h. One hour later a second bus leaves the same station, traveling
east at a rate of 48 mi/h. At what time will the two buses be 274 mi apart? I am a 51 year old woman trying to get her GED I need help with fractions and algebra can anyone HELP me out there?