exam Maths Puzzle Numerical Ability

Twice the sum of a number and 5 is at least 35. What is the number?

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exam Other Question

Use the compund interest formulas
Find the accumulated value of an investment of $8000 at 9% compounded continuously for 4 years.
$11,466.64
$11,566.64
$10,880.00
$11,292.65 find the domain of the composite function f*g
f(x)=2/x+10,g(x)=60/x