An arch at a new amusement park is constructed with two vertical walls and parabolic arch top, where x represents the horizontal distance in feet and f(x) represents the height in feet.

the y-axis represents the vertical left edge of the arch. since the arch and it’s base are symmetrical, complete the equation for the line containing the vertical, right edge of the arch.

x=

The answer is x=60.

Since the arch and its base are symmetrical, so that other side of arch should be at (x, 20).  Refer to x-axis when y is equal to 20.  Thus, x=60.

I just took the test and the answer is correct.

Step-by-step explanation:

60

Step-by-step explanation:

I took the test on E2020.

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation: