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$3$. Select all expressions that are equivalent to $5 x+2-(3 x-1)$$\newline$a. $5 x+1-3 x-7$ b. $5 x+-3 x+2+1$$\newline$c. $2 x+3$$\newline$c. $2 x+3$$\newline$d. $5 x-3 x+2-1$ e. $5 x+2+-3 x--1$$\newline$$4$.) At midnight, the temperature in a city was $2$ degrees Celsius. The temperature was dropping at a steady rate of $4$ degrees Celsius per hour.$\newline$a. Write an inequality that represents $t$, the number of hours past midnight, when the temperature was colder than $-10$ degrees Celsius.$\newline$$6$. On the number line, show all the values of $t$ that make your inequality true.$\newline$a. Expand to write an equivalent expression: $-\frac{1}{4}(-12 x+16 y)$$\newline$Factor to write an equivalent expression: $5 x+1-3 x-7$$0$