Answer:
-3
Step-by-step explanation:
Because f(x) = y so when y=3 what is input value (x)
When y is 3 x is -3
Answer:
16 years old
Step-by-step explanation:
The age of his sister = 12 years old
Gasta is 4 years older than his sister,
The age of Gasta
= 4 + 12
= 16 years old.
Therefore,
Gasta is 16 years old.
Answer:
11 km/hr.
Step-by-step explanation:
Given information:
Simulated speed = 20/km/h
Time = 15 mins = 1/4 hr = 0.25 hr
Distance Covered as per simulated speed = 
Position of Julian according to the app =
.
Actual distance covered by the bike is

Formula for speed:



Therefore, the average speed of Julian is 11 km/hr.
To write in the mixed fraction you have to simply divide 8 and 4.
To right in the mixed number we need to know numerator, denominator and divisor.
So in your problem our divisor is 4,
so now lets divide it


So, now we have to write it as mixed number..
mixed number will be

Hope this helped you.. :)