What is the vertex of the graph of the function f(x) = x2 + 3x - 2?

see below

Step-by-step explanation:

We need to write it on vertex form (f(x) = a(x - c)² + d where (c, d) is the vertex) and to do that we will complete the square.

f(x) = x² + 3x - 2

= (x² + 3x + 9/4) - 9/4 - 2

= (x + 1.5)² - 4.25

The vertex is (-1.5, -4.25).

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72

c

step-by-step explanation: easy math