Q. If f(x)=3xx+18, what is the value of f(5), to the nearest tenth (if necessary)?Answer:
Substitute x with 5: To find the value of f(5), we need to substitute x with 5 in the function f(x)=3xx+18.Calculation: f(5)=3×55+18
Simplify numerator: Now we simplify the numerator by calculating the square root of 5 and then adding 18.Calculation: 5≈2.236+18≈20.236
Simplify denominator: Next, we simplify the denominator by multiplying 3 by 5.Calculation: 3×5=15
Divide numerator by denominator: Now we divide the simplified numerator by the simplified denominator to get the value of f(5).Calculation: f(5)≈1520.236≈1.349
Round to nearest tenth: Since we need to round the answer to the nearest tenth, we round 1.349 to 1.3.Calculation: Rounded value of f(5)≈1.3
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