How does the value of the digit 8 in 1.8 compare to the value of the digit 8 in 486?

Xy = 450

y = x/2 => x=2y  plugging this into the first equation yields 2y*y=450 => y^2 = 225

y=15 since 15*15=225

x=2y therefore x=2*15 = 30 

x=30
y=15

I hope this is helpful to you 

I estimate that a total of 50 students participated in the survey

and 18 expressed a desire to learn Spanish.

In a pictorial graph, icons are utilized to depict the data presented. For instance, if a survey was conducted regarding food preferences at a barbecue, we might incorporate images of a hamburger, a hot dog, and a chicken leg. However, we cannot deduce the quantities involved merely by juxtaposing the icons.

Answer:

graph representing the function f of x equals 30 multiplied by 0.88 raised to the exponent of x

Step-by-step explanation:

The deodorant starts to evaporate, indicating a mass reduction, thus 12% represents the decay rate. In exponential decay, the function's graphical representation adheres to the formula:

Where signifies the starting quantity (), is the decay rate () and denotes the time intervals, measured in days for this case. By inserting the given values into the formula:

Which aligns with the "graph representing the function f of x equals 30 multiplied by 0.88 raised to the exponent of x".