exam Maths Puzzle Numerical Ability

Please help me solve the following problem:

-5k-19=5-13k

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exam Other Question

f(x)=8x2-4x-5

for the given function f match each domain value(-1,0,1/2,2) with its corresponding range value.
Tutors Please help! thank you

Find each of the following to four decimal places using a calculator
e^6 and (1/e^2)^2