exam Maths Puzzle Numerical Ability

Solve using square root property
(x+8)^2=81

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exam Other Question

Okay..i am totally lost on this one. Help please

Write the proportion 14 is to 22 as 28 is to 44. use log base 10 5=0.6990 and log base 10 7=.8451 to approximate the value of each expression
1. log base 10 35
this is from a worksheet