Yes it is
Step-by-step explanation:
it is a linear function as it is written in the standard form Y=MX+C
Find the lowest common multiple by stating out the multiples of 14 and 21. Like this:
14,28,42,56,70,84,98,112,126...
21,42,63,84...
There you have it. 84 is the lowest common multiple.
I HOPE THIS HELPS :) IM SORRY IF IM WRONG
Answer: 
Step-by-step explanation:


<em>Thus, the expressions will be used: (5x² + 15x - 20) and (x + 4).</em>
<em>Let's check:</em>

DO u need the percetage or the price?Step-by-step explanation:
Answer: If four numbers are proportional, a : b = c : d, then the product of the extremes is equal to the product of the means. ad = bc