Four times the sun of twice a number and -3
Answer: -4n3+12n2+7n-9
Step-by-step explanation: it basically the opposite sign (positive or negative) switched, and the order backwards. hope that helped
Answer:
The cost price was 500.
Step-by-step explanation:
Let x be the original price.





Answer:
-5½
Step-by-step explanation:
-2x = 11
x = -11/2
x = -5½