Evaluating Expressions
Evaluate the expression.
x + 10, when x = 15
What is: 25?
Solve for x.
x - 9 = 3
What is: x = 12?
Use the distance formula to solve the equation.
D = (64 miles per hour)(3 hours)
What is: D = 192 miles?
What is the area of a triangle with a base of 5 meters and a height of 6 meters?
What is: Area = 15 meters2 ?
Rewrite the phrase as a variable expression or equation.
8 times a number x
What is: 8x?
Evaluate the expression.
32 - y, when y = 11
What is: 21?
Solve for s.
17 + s = 30
s = 13?
Use the distance formula to solve the equation.
D = (9 ft. per second)(10 seconds)
What is: D = 90 feet?
What is the perimeter of a triangle that has these side lengths:
a = 23 cm b = 12 cm c = 18 cm
What is: 53 cm?
Solve: 33
What is: 27?
Evaluate the expression.
x2 - 5, when x = 7
What is: 44?
Solve for y.
y + 4 = -6
What is: y = -10?
Use the distance formula to solve the equation.
120 miles = (60 miles per hour)(?)
What is: T = 2 hours?
The perimeter of the triangle is 35 cm. Solve for side length 2.
Side length 1: 13 cm
Side length 2: ?
Side length 3: 12 cm
What is: 10 cm?
Rewrite the phrase as a variable expression or equation.
Subtracting 18 from y
What is: y - 18?
Evaluate the expression.
5y + 2x, when y = 6 and x = 1
What is: 32?
Solve for x.
45 + x = 90
What is: x = 45?
Use the distance formula to solve the equation.
Jimmy was running after school to prepare for his upcoming soccer game. He was running at a rate of 100 ft. per minute. He was running for 15 minutes. How many feet did he run in total?
What is: D = (100 ft. per minute)(15 minutes)
What is: D = 1,500 feet?
Find the area and perimeter of the triangle.
Base (1st side): 12 in.
Height (2nd side): 12 in.
3rd side: 8 in.
What is: P = 32 in.
A = 72 in.2 ?
What is: true?
26 = 64, and 82 = 64
Evaluate the expression.
y2 - 4(x2), when y = 8 and x = 3
What is: 28?
Solve for c.
21 - c = 0
What is: c = 21?
Use the distance formula to solve the equation.
Tyler got his license. He's driving on the highway for 30 minutes. He's driving at a rate of 60 miles per hour. How many miles does he drive in total?
What is: D = (60 miles per hour)(30 minutes)
D = (60 miles per hour)(0.5 hours)
What is: D = 30 miles in 30 minutes?
The area of the triangle is 24 in.2
The base is 8 in.
The height is...?
What is: 6 inches?
True or false? 72 = 43
What is: false?
49 does not equal 48.