12/15 (7 Plus)

Front

What is the formula to calculate the distance run by Sacha and Marcela?

Back

Distance = Speed × Time. To find how much further Sacha runs than Marcela, subtract Marcela's distance from Sacha's.

Front

If Sacha runs 9.5 miles and Marcela runs 2 miles, how do you find the difference in their distances?

Back

Subtract Marcela's distance from Sacha's: 9.5 miles - 2 miles = 7.5 miles.

Front

What does the inequality x ≤ -1 represent on a number line?

Back

It represents all values of x that are less than or equal to -1, including -1 itself.

Front

How do you solve for x in an equation?

Back

Isolate x on one side of the equation using inverse operations.

Front

What is the total cost of Bella's shopping before the discount?

Back

Total cost = Hat ($30) + Jeans ($42) + Shoes ($68) = $140.

Front

How do you calculate the total cost after a 30% discount?

Back

Total cost after discount = Original cost × (1 - Discount rate). For Bella: $140 × (1 - 0.30) = $98.

Front

What is the simplified form of the expression -98m - 2i - 10i - 2m?

Back

Combine like terms: -98m - 2m = -100m and -2i - 10i = -12i, so the simplified expression is -12i - 100m.

Front

What is the definition of an inequality?

Back

An inequality is a mathematical statement that compares two expressions, showing that one is less than, greater than, less than or equal to, or greater than or equal to the other.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and reduce it to its simplest form.

Front

What is the process to find the value of x in an equation?

Back

Use algebraic methods such as addition, subtraction, multiplication, or division to isolate x.