Question

solve.
3 write and simplify a multiplication expression for each problem. explain what the product means.
a. the temperature dropped 8 degrees every hour. what was the change in temperature after 4 hours?
b. mae loses 3 points for each wrong answer on a test. how does her score change if she has 7 wrong answers?

Explanation:

Part a

Step1: Define the expression

The temperature drops 8 degrees per hour, so for 4 hours, the multiplication expression is $(-8) \times 4$ (negative because it's a drop).

Step2: Simplify the expression

$(-8) \times 4 = -32$

Step3: Explain the product

The product -32 means the temperature decreased by 32 degrees after 4 hours.

Step1: Define the expression

Mae loses 3 points per wrong answer, so for 7 wrong answers, the multiplication expression is $(-3) \times 7$ (negative because it's a loss).

Step2: Simplify the expression

$(-3) \times 7 = -21$

Step3: Explain the product

The product -21 means her score decreases by 21 points if she has 7 wrong answers.

Answer:

The multiplication expression is $(-8) \times 4$, simplified to -32. The product means the temperature dropped by 32 degrees after 4 hours.

Part b