At midnight, the temperature in a city was 5 degrees Celsius. The temperature was dropping at a steady rate of 2 degrees Celsius per hour.
Write an inequality that represents t, the number of hours past midnight, when the temperature was colder than -4 degrees Celsius. Explain or show your reasoning.

2.
Tyler is simplifying the expression 6−2x+5+4x.

Here is his work:

6−2x+5+4x

(6−2)x+(5+4)x

4x+9x

13x

His work is incorrect. Explain the error he made.

3.
Simplify the expression 6−2x+5+4x. Hint: Your final expression shoul donly have two terms.

4.
Factor to write an equivalent expression:

36a−16

5.
Expand to write an equivalent expression:

−14(−8x+12y)

6.Diego's family car holds 14 gallons of fuel. Each day the car uses 0.6 gallons of fuel. A warning light comes on when the remaining fuel is 1.5 gallons or less.

Starting from a full tank, can Diego's family drive the car for 14 days without the warning light come on?

Please help me thank you