A because two negatives make a positive
Not sure what you're asking for but the Integer of 160ft above sea level will just be +160
59pounds * 5days = 295pounds
6.95pounds * 3breakfasts = 20.85pounds
12.50pounds * 1eveningmeal = 12.50pounds
295pounds + 20.85pounds + 12.50pounds = 328.35pounds
Wrote out the units just for clarity! Liz payed 328.25 pounds altogether.
3(n-7)=-30
3n-21= -30
3n = -9
n= -3
