exam Maths Puzzle Numerical Ability

For what values of x is the value of each expression a real number?
1. square root of x
2. 5-square root of x
3. square root of x+3

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exam Other Question

Hello,

Can you please help me with the following 2 problems:

1. Find the equation of the line that passes through the point A(-2, 5/6) with slope -7/6. Express the answer in find the equation in slope-intercept form of lines passing through points with slopes

3y-2=x over 5
point(0,-3);slope of 3over4

point (0,6); slope of 4

find the equation