exam Maths Puzzle Numerical Ability

the speed limit on a certain stretch of highway is 65 miles per hour.Write an inequality that represents the distances you can travel iof you obey the speed limit for 2 hours. Solve the inequality.

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exam Other Question
Given the algorithm,

1. pH = - log[H+]
2. H+ = 10-pH

where pH is acidity level and H is hydrogen ion concentration

Find [H+] for condensed milk with 6.3 pH.

Make 2.1x+45.2=3.2-8.4x