Final answer:
The value of y in the equation 10ʸ = 5 can be approximated using the graph of the function f(x) = log₁₀x. The correct answer is option c. (y approx 0.70).
Step-by-step explanation:
The value of y in the equation 10ʸ = 5 can be approximated using the graph of the function f(x) = log₁₀x. To find the value of y, we need to find the value of x that corresponds to y. From the graph, we can see that when x = 0.7, the value of y is approximately 0.70. Therefore, the correct answer is option c. (y approx 0.70).