question:

in the equation p = 2x + 7, p represents the price, in dollars, of tickets to a concert x hours after they go on sale. when will the price exceed $20.00?

1. describe in words how the equation can be used to solve the problem.

2. draw a graphical representation of the price equation, and illustrate how a solution could be found that way.

Let

P-------> the price  in dollars of tickets

x------> the number of hours

we know that

-------> equation A

When will the price exceed $20.00?

Part 1) Describe in words how the equation can be used to solve the problem

Substitute the value of P equal to in the equation A and find the value of x

so

For

substitute in equation A

therefore

the answer Part 1) is

the price exceed   when the time exceed

Part 2) Draw a graphical representation of the price equation, and illustrate how a solution could be found that way.

using a graphing tool

Draw the equation of the lines

the solution is the intersection both graphs

see the attached figure

the solution is the point

that means

for  

the volume is the product of the area of the base, 3x(3x+4), and the height, 3x-1

step-by-step explanation:

y < -3

step-by-step explanation:

-3y - 2 > 7

-3y -2 + 2 > 7+2

-3y > 9

-3y/-3 < 9/-3   (change the inequality sign when multiplying or dividing by a negative number)

y < -3