How do I find f(g(4)) if f(x) = 5x and g(x) = 3x + 7?

To find f(g(4)), we need to first evaluate g(4) using the function g(x) = 3x + 7. Let’s break down the steps:

1. Calculate g(4):
• Substitute 4 into the function g:
• g(4) = 3(4) + 7
• g(4) = 12 + 7
• g(4) = 19
2. Now calculate f(g(4)) or f(19):
• Substitute 19 into the function f:
• f(19) = 5(19)
• f(19) = 95

Thus, the final result is:

f(g(4)) = 95