An oil painting of an amusement park is 1/20 the size of the actual amusement park. The tallest point of the Ferris wheel is 13 feet 6 inches, and the first roller coaster hill is 25 feet tall. How many inches tall is the roller coaster hill in the drawing?

i belive those are the ones that are under 90 degreese.

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.  

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph