Answer:
D: (1 + x) f[x] == 3
R: x < -1 || x > -1
Step-by-step explanation:
Answer:
X = 0
Step-by-step explanation:
First I'd suggest plotting the points on a graph so that you can visualize the problem. What you're trying to find is the area of the triangle that the three points given will form. The area of a triangle is

where b is the size of the base of the triangle and h is the height of the triangle. From graphing the three points and connecting them, you can see that the base of the right triangle formed is 4 units/gridlines and the height of the right triangle is 7 units/gridlines. SInce the problem specifies that each gridline is 2 feet, that means that the base 4 x 2 = 8 feet, and the height is 7 x 2 = 14 feet. Now you just plug these values into the equation for the area of a triangle to get

feet squared as the area that will be covered in gravel.
Answer:
The cost for each pound of jelly beans and each pound of almonds is $1.25 and $2.25 respectively.
Step-by-step explanation:
Let the cost for each pound of jelly beans and each pound of almonds be x and y respectively.
ATQ,
For 5 pounds of jelly beans and 3 pounds of almonds, the total cost is $13.
5x+3y = 13 ...(1)
For 2 pounds of jelly beans and 6 pounds of almonds, the total cost is $16.
2x+6y = 16
x + 3y = 8 ....(2)
Subtract equation (2) from (1)
5x+3y-(x + 3y)= 13-8
4x = 5
x = 5/4
x = $1.25
Put the value of x in equation (2) as follows :
1.25 + 3y = 8
3y = 8-1.25
y =$2.25
Hence, the cost for each pound of jelly beans and each pound of almonds is $1.25 and $2.25 respectively.