PLEASE HELP The Greenland Ice sheet contains about 3 million cubic kilometers of ice. If completely metled, this ice would release about 2.7 million cubic kilometers of water, which would spread out over Earth's approximate 339 million square kilometers of ocean surface. How much would the sea level rise?

I read this as -5e⁻⁴ˣ⁺²+3=½log₁₀(x²+1).

If this is not right the steps below can guide you to a possible solution when the correct formula is used.

My calculator is a Casio fx-85GT PLUS which has a function facility (MODE 3: TABLE).

I input the function: -5e⁻⁴ˣ⁺²+3-½log₁₀(x²+1). I assumed that log was log to base 10 rather than natural log ln.

The facility asks me to input a start value, end value and step value. I chose -10, 10 and 1 initially.

After a few seconds of evaluating a table of results the calculator showed me the results of plugging in x=-10 up to 10 in steps of 1.

The results showed the evaluation for each of the 21 values and I looked for the sign of the result to change.

For x=0 the result was -33.95 approx and for x=1 it was 2.1728 approx. So between 0 and 1 there is a zero, a solution for x.

I returned to the function and changed the parameters to start=0, end=1, step=0.1 to begin the next evaluation.

This time the sign change occurred between x=0.6 and 0.7.

I returned to the function with parameters: start=0.6, end=0.7, step=0.01.

The sign change occurred between 0.63 and 0.64, the start and end parameters with step=0.001 for the next iteration.

The solution is between 0.633 and 0.634.

Repeat the process one more time with step=0.0001. The sign change was between 0.6338 and 0.6339 so the solution to three dec places is 0.634.

Step-by-step explanation: