Chapter 13 Test Review
x=5
During a drought, the water level of a lake changes -3 1/5 feet per day. Write and solve an equation to find how long it takes for the water level to change -16 feet.
x=11
The floor of a canyon has an elevation of -14.5 feet. Erosion causes the elevation to change by -1.5 feet per year. How many years will it take for the canyon floor to have an elevation of -31 feet?
x=2 3/5
The perimeter of the triangle is 45. Find the value of x. The sides are 5x, 17, and 15.
8x
Write an expression in simplest form for the perimeter of a exercise mat with a length of 3x and a width of x.
x=9.424
You lose 0.3 point for stepping out of bounds during a floor routine. Your final score is 9.124. Write and solve an equation to find your score before the penalty.
x=9.28
You withdraw $29.79 from your bank account. Now your balance is -$20.51. Write and solve an equation to find the amount of money in your bank account before you withdrew the money.
5x + 4
7x + 6 + 3x - 2 - 5x
3x+1
A basket holds x apples. You pick 2x-3 apples, and your friend picks x+4 apples. Write an expression that represents the number of apples you and your friend picked.
x=6 7/8
A basketball game has four quarters. The length of a game is 32 minutes. You play the entire game except for 4 1/2 minutes. Write and solve an equation to find the mean time you play per quarter.
1.5x-3.2
Simplify the expression. -1.5(4-x)+2.8
-7 + 7x
Simplify the expression. -7 + 3x + 4x
2x-18
Simplify the expression. 1/8(16x-8)-17
8x
Simplify the expression. 2(3x + x)
6.5x-3
Simplify the expression. 2.5x-3+3x
2x + 6
Simplify the expression. 2x + 4 - 3x + 2 + 3x
15+3x
Simplify the expression. 3(5-2x)+9x
9/20x+12
Simplify the expression. 3/5x+19-3/20x-7
1/14x+6
Simplify the expression. 5/7x+15-9/14x-9
10x-5
Simplify the expression. 8x-5+2x
x=-2 1/3
Solve the equation. -14=6x
x = 2.1
Solve the equation. -2x + 3.7 = -0.5
x=7
Solve the equation. -2x+6=-8
x=-9
Solve the equation. -4(x+3)=24
x=4.22
Solve the equation. -5x+2.3=-18.8
x=2.38
Solve the equation. -6.5 + x = -4.12
x=-4
Solve the equation. -6x-7=17
x=-12
Solve the equation. -8x-5x+7x=72
x=-1/30
Solve the equation. -9/4x+4/5=7/8
x=-2
Solve the equation. 2(x+1)=-2
x=13 1/2
Solve the equation. 2-x/3=-5/2
x=-7
Solve the equation. 2/7x -3/8=-19/8
x=-36
Solve the equation. 2/9x=-8
x=-8/9
Solve the equation. 3(3x-4)=-20
x= -10 1/4
Solve the equation. 4 1/2 + x = -5 3/4
x=-3.5
Solve the equation. 4+2.2x=-3.7
x=-6.4
Solve the equation. 7.3x-5.18=-51.9
x=-3/7
Solve the equation. 7x=-3
x=-9.1
Solve the equation. x+14.5=5.4
x= -28
Solve the equation. x/-7 = 4
x=1 1/3
Solve the equation. x/4-5/6=-1/2
x=-12
Solve the equation. x/6+5/8=-1 3/8
x=-3.5
Solve the equation. -3x-4.6=5.9
9x + 2
-3(x - 4) - 2(-6x +5)
-10x+29
Find the difference. (2-7x)-3(x-9)
8x-17
Find the difference. (2x-13)-(-6x+4)
6x-9
Find the difference. (8x-3)-(2x+6)
3x - 10
Find the difference. (x - 8) - (-2x + 2)
-18.5x+28.1
Find the difference. -2.5(2x-5)-3(4.5x-5.2)
-4/15x-8
Find the difference. 2/5(x-10)-2/3(x+6)
-13x + 8
Find the sum. (2 - x) + 3(-4x + 2)
11x+4
Find the sum. (3x+11)+(8x-7)
12x - 1
Find the sum. (9x + 5) + (3x - 6)
4x + 4
Find the sum. (x + 12) + (3x - 8)
4x+5
Find the sum. (x-4)+(3x+9)
7/12x
Find the sum. 1/4(x - 12) + 1/3(x + 9)
12x+6
Find the sum. 3/4(8x+12)+3/8(16x-8)
