exam Maths Puzzle Numerical Ability

you are to make montly deposits of $300 into a retirement account that pays 12 percent interest compounded monthly. If your first deposit will be made one month from now, how larg

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exam Other Question

given the equation y=-5x+1

a. find the slope of a line parallel
b. find the slope of a line perpendicular
c. graph a parallel line that goes throught the point (4,-1) my problem is I need to find the domain and range for f(x)=The Square Root of
25-(X^2)....all terms are under the square root symbol. ALSO where can I see if its increasing or decreasing?