If h(x)=1/5(x2-6)-8, what is h(4)?
To find h(4), we substitute 4 for x in the expression for h(x):
h(4) = 1/5(4^2 - 6) - 8
Calculating the expression inside the parentheses:
4^2 = 16
Substituting 16 into the expression:
h(4) = 1/5(16 - 6) - 8
Calculating 16 - 6:
16 - 6 = 10
Substituting 10 into the expression:
h(4) = 1/5(10) - 8
Calculating 1/5(10):
1/5(10) = 2
Substituting 2 into the expression:
h(4) = 2 - 8
Calculating 2 - 8:
2 - 8 = -6
Therefore, h(4) = -6.