exam Maths Puzzle Numerical Ability

what is 49 in creased by twice a number when it is written in an algebraic expression?

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exam Other Question

The length of a rectangle is 5 cm more than 4 times its width. If the area of the rectangle is 80 cm2, find the dimensions of the rectangle to the nearest thousandth.


Please Help!
given h(x)=4/18-x (4 over 18-x)



what number(s) are NOT in the domain?