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  

13.33%

say 50 oranges, then 100 apples

80 are red, 20 are yellow

total fruit = 150

20chances out of 150 for yellow

20/150 = 13.33%