Answer:

Step-by-step explanation:
Multiply the fraction by the conjugate and solve (would explain more but you're on a time crunch)
Yes. It is equivalent to 3. Combine like terms
If 1 cm = 3 ft, then 5 cm = 5*3 = 15 ft.<==
Answer: Three less than a number
Step-by-step explanation: z-3 means the three is subtracted from the unknown number.
<em>An unknown quantity less than three. would be 3 - z or z < 3</em>