Answer:
Therefore, the solutions of the quadratic equations are:

The graph is also attached.
Step-by-step explanation:
The solution of the graph could be obtained by finding the x-intercept.

Finding the x-intercept by substituting the value y = 0
so

∵ y = 0












So, when y = 0, then x values are 3, and 5.
Therefore, the solutions of the quadratic equations are:

The graph is also attached. As the graph is a Parabola. It is visible from the graph that the values of y = 0 at x = 5 and x = 3. As the graph is a Parabola.
Answer: 35
Explanation: If patty has $21, and $3 is the price for 5 hat pins, then: 21/3=7, so she can buy 7 packages which cost $3 and contain 5 pins, and because the question asked the number of pins, we will multiply 7 • 5 and that equals 35
2+2=4 and 4+4=8 and 8+8=16