Answer:
Sol1 you can use "first(first+last)/2" is 138(138+1)/2 - 38(38+1)/2 = 8850
Sol2 or you can look this 39+40+41+....+100+(100+1)+(100+2)+....+(100+38) = 1+2+3+.....+99+100+100(38) = 5050+3800 =8850
It should be option A! I hope this helps you!
Answer:
0.001189 x 10^7
Step-by-step explanation:
4.1 x 10^7 gallons of water
2,900 gallons of water = 2.9 x 10^3
Balance the 10th power with the first one.
2,900 = 0.00029 x 10^7
Multiply only the decimal number...
4.1 x 0.00029 = 0.001189
The answer is...
0.001189 x 10^7
8% equals 3.2. If you add $40 plus $3.2 cents that shopper would of paid $43.2 cents.
