Answer:
30 km/h
Step-by-step explanation:
usual speed= x km/h
increased speed= x +10 km/h
distance= 360 km
time difference= 3 h
- 360/x= 360/(x+10) +3
- 360/x= (360+ 3x+30)/(x+10)
- 360(x+10)= x(390+3x)
- 360x+3600= 390x+ 3x²
- 3x² + 30 x -3600=0
- x²+10x-1200=0
- x=30 km/h
Answer:
graph of function f of x equals 30 multiplied by 0.88 to the power of x
Step-by-step explanation:
The deodorant is begun to evaporate in other words, it is losing mass so the rate of 12% is a decay rate. In the exponential decay, the graph of the function goes according to the formula:

Where
is the initial amount (
),
is the rate of decay (
) and
the times intervals, in this case, measured in days. Substituting the values in the formula:

Which corresponds with the "graph of function f of x equals 30 multiplied by 0.88 to the power of x".
Answer:
There is not graph
Step-by-step explanation: