Answer:

Step-by-step explanation:
1) Evaluate the exponent:

2) Multiply the numbers:

Answer:
2.423
Step-by-step explanation:
Surface that is not water: 5.1 - 3.61 = 1.49
How many times water is bigger than not water: 3.61/1.49 = 2.423
Answer:
$630
Step-by-step explanation:
They raised 70% of $900.
70% of $900 = 70% × $900 = 0.7 × $900 = $630
21 divided by 7 is 3. So he would have ate 3 scopes a day.
15 is 9 more that j
Let is be the = sign.
Let more than be the + sign.
15 = 9 + j