Answer:
Yes It is function.
Step-by-step explanation:
Domain= { 3,4,6 }
Range = { 5 }
Answer:
5.625¢
Step-by-step explanation:
The amount of energy used by the chandelier is ...
5 × 0.075 kW × 1.5 h = 0.5625 kWh
At 10¢ per kWh, the cost will be ...
0.5625 kWh × 10¢/kWh = 5.625¢ . . . . cost of operation for 90 minutes
So it is asking you to group like term so
x terms can be grouped/added/subtracted to other x terms, but not to x^2 or x^3 terms
x^2 terms to x^2 and so on so
1. 9-3k+5k=
9+(5k-3k)=
9+2k
2. k^2+2k+4k=
k^2+(2k+4k)=
k^2+6k=
