exam Maths Puzzle Numerical Ability

Two buses leave Houston at the same time and travel in oppisite direction. One bus averages 55 mi/h and the other bus averages 45 mi/h. When will they be 400 mi apart?

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exam Other Question

How do I evaluate each function for the value of:

f(x)=x^2-7x+10; find (a) f(0), (b) f(5), and (c) f(-2)
:
segment P,1 P,2 has length L and endpoints P1=(2,7) and P2=(8,3) find a point on P1P2 that is 1/3L away from P1?


A.(6,11/3)
B.(4,5)
C.(4,17/3)
D.(11/3,17/3)
E. n/a