Answer:
The length of the bulletin board is
The width of the bulletin board is
Step-by-step explanation:
Let
x-----> the length of the bulletin board
y-----> the width of the bulletin board
we know that
The area of the rectangle (bulletin board) is equal to
we have
so
------> equation A
------> equation B
substitute equation B in equation A and solve for y
Using a graphing calculator------> solve the quadratic equation
The solution is
see the attached figure
Find the value of x
<em><u>Expression that represent the show the total cost for any number of rose bushes and tomato plant is:</u></em>
<em><u>Solution:</u></em>
Let "x" be the number of roses bush
Let "y" be the number of tomato plant
Cost of 1 rose bush = $ 5
Cost of 1 tomato plant = $ 2
To find: Expression that represent the show the total cost for any number of rose bushes and tomato plant
Total cost = number of roses bush x Cost of 1 rose bush + number of tomato plant x Cost of 1 tomato plant
Thus the expression is found where, x and y are the number of rose bush and tomoato plant bought respectively