The first blank is proportional because <span>two quantities is one in which the two quantities vary directly with one and other. </span>If<span> one item is doubled, the other, related item is also doubled. Because of this, it is also called a direct variation. </span>
Answer:
And find it all urself
Step-by-step explanation:
When you estimate you either round up or down to get an even number. It's easier to mentally multiply numbers ending in 0.