Question 5 of 12 An architect is designing a staircase in the shape of congruent right triangles with dimensions shown in the diagram. How many steps or
triangles are needed if the height of the staircase is not to exceed 12 feet? Enter your answer as a whole number.

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.