exam Maths Puzzle Numerical Ability

Are the following lines parallel, perpendicular, or neither? L1 through (9, 2) and (3, -8) L2 through (-3, 5) and (5, -1)

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exam Other Question

1)solve 9*6t=9/36
2) solve In p=6.0
3) using the formula R-0.17 + 0.44 log N, determine how many choices would result in a reation time of 0.42 seconds. Round your answer to the nearest whole number.
Write an inequality for each problem:

16. The difference of three times a number and 16 is at least 8.

18. Five less than the product of 6 and a number is no more than twice that same number.