Answer:
Part 4) The number of meters by which each dimension must be increased is
Part 5) The ball hit the ground at
Step-by-step explanation:
Part 4) we know that
The area of the original Joe's garden is equal to
Increasing the length and the width with the same amount to double the area
we have
Let
x------> the number of meters by which each dimension must be increased
Using a graphing tool solve the quadratic equation
see the attached figure
The solution is
Part 5) we have
we know that
To calculate after how many seconds will the ball hit the ground, find the t-intercept of the function
Remember that
The t-intercept of the function h(t) is the value of t when the value of h(t) is equal to zero
so
equate h(t) to zero
Using a graphing tool
Find the t-intercept
see the attached figure
The solution is