<h2>
Answer:</h2><h2>1.) -6</h2><h2>2.) 53</h2><h2>3.) -111</h2>
Answer:
After 22 seconds the projectile reach its maximum height of 4,840 units
Step-by-step explanation:
we have

This is a vertical parabola downward (because the leading coefficient is negative)
The vertex is a maximum
Find out the coordinates of the vertex
Convert the quadratic equation in vertex form
Factor -10

Complete the square


Rewrite as perfect squares

The vertex is the point (22,4,840)
therefore
After 22 seconds the projectile reach its maximum height of 4,840 units
The unit rate of the equation is 3x+7
You can either compute three line integrals, or use Stokes' theorem and compute one surface integral. I prefer the latter.
The curl of the given vector field is

Parameterize the triangular surface bounded by

- I'll call it

- by

with

and

. By Stokes' theorem, we have

where

is positively oriented; that is, every vector normal to

is pointed in the positive

direction. The surface element is given by

So our integral is

The equation is 13+r = 74. This is because the term "sum" means we add two or more values.
That equation solves to r = 61 after subtracting 13 from both sides.
Assuming the r value is her height in inches, it means Rhonda is 61 inches tall (i.e. 5 feet, 1 inch)