Understanding One-Step Equations with Rational Coefficients

What is a rational number?

• A number that cannot be a decimal

• A number that is always positive

• A number that can be expressed as a fraction

• A number that is only an integer

What is the main difference between simplifying expressions and solving equations?

• Solving equations involves only addition and subtraction

• Simplifying expressions involves combining like terms, while solving equations involves finding a single value for a variable

• Solving equations involves combining like terms

• Simplifying expressions involves finding a single value for a variable

Which operation is the inverse of addition?

• Exponentiation

• Division

• Multiplication

• Subtraction

How do you solve the equation X + 3.2 = -8.5?

• Add 3.2 to both sides

• Subtract 3.2 from both sides

• Multiply both sides by 3.2

• Divide both sides by 3.2

What is the result of dividing 30 by 0.5?

• 15

• 60

• 30

• 0.5

In the context of elevation, what does a negative number represent?

• A decrease in elevation

• An increase in elevation

• An elevation above sea level

• A constant elevation

If a scuba diver moves from -12.2 meters to -5.5 meters, what is the vertical distance traveled?

• 6.7 meters

• 7.7 meters

• 7.5 meters

• 6.5 meters

How long will it take for the temperature to decrease by 5 degrees if it drops at a rate of 3/4 degree per hour?

• 5 hours and 20 minutes

• 6 hours and 40 minutes

• 7 hours and 30 minutes

• 6 hours and 20 minutes

What is the decrease in value of a stock that drops at a rate of $1.20 per hour over 3.5 hours?

• $4.50

• $5.00

• $3.50

• $4.20

If a freezer's temperature increases by 7.5 degrees at a rate of 2.5 degrees per hour, how many hours did it take?

• 2 hours

• 3 hours

• 4 hours

• 5 hours