Answer:
Step-by-step explanation:
We are given
Calculation of P+Q:
now, we can combine like terms
Calculation of Q-P:
Firstly, we will distribute negative sign
20% = 0.20
- - 0.20 = 0.80
28*0.80 = 22.40
22.40-2 = 20.40
it cost $20.40
11
(-3)²-3(-3)-7
9+9-7
Answer:$7.56 because 72 times 0.105 is 7.56