Write an expression for the area of a rectangle with a length of 3 in and a width of 2x - 4 inches.
6x - 12 in^2
100
Your family drives to North Carolina for a vacation. The trip is about 640 miles and the car uses 20 gallons of gas. What is the car's miles per gallon?
32 MPG
200
-3(6x - 7)
-18x + 21
200
2(x + 4y) + 7 + 3x + 5(2y + 1)
5x + 18y + 12
200
-16 = 8x
x = -2
200
Write an expression for the area of a triangle with a base of 7 cm and a height of 4x + 2 cm.
14x + 7 cm^2
200
2x - 4y - 5x + 2(2y - 3x)
-9x
300
-4x(2 + 9)
-44x
300
-3x + 12y - 9 + 16x - 6y - 4
13x + 28y - 13
300
x/4 = 10
x = 40
300
A rectangle has a length of x inches and a width of 6 inches. The perimeter is 28 inches. What is the length?
x = 8 inches
300
x/-14 = -3
42
400
-12x(2x - 6)
-24x^2 + 72x
400
-3x + 2(2y - 7) + 9(2x - y) + 20
15x - 5y + 6
400
3 + x - 12 = 15
x = 24
400
A rectangle has a length of x inches and a width of 6 inches. The area is 72 inches. What is the length?
x = 12 inches
400
A square has a perimeter of 36 inches. What is each side length?
9 in
500
1/4x(1/2 - 2/3)
-1/24x
500
7 - 2(x +3y) - 3(2x + 1) - 18y
-8x - 24y + 4
500
-4x + 16x = -96
x = -8
500
A pentagon has side lengths of 3 ft, 6 ft, 5 ft, 1 ft, and x ft. Find the missing side length if the perimeter is 22 ft.