exam Maths Puzzle Numerical Ability

what are 2 functions for the following equation:

((x+1)/10)^2 + (y/5)^2 = 1

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exam Other Question

A roof rises 8.25 feet over a horizontal distance of 18.56 feet. What is the slope of the roof to the nearest hundredth?
a. 2.25
b. 0.44
c. 1.78
d. 1.13

Show all work 3/4(12x-20)+2x2=2x(x+3)