You have to multiple and then add to get
(5)(-8)+(7)(2)=-26
First one is $16 and the second is $276.25
You didn't write the (-2/7) as a power; you were supposed to do b to the power of -2 over 7, which is what the other person done in your other post regarding this
Answer:
Số tien:S =150000+(x-10)14000
Step-by-step explanation: