A. 3 times 10^4
90000000 divided by 3000 is 30000 which happens to be equal to 3 times 10^4
If you want to learn how to do this just take your whole number ex: 3 and put 10^6 and you will have 3 followed by 6 zeros. The ^ is just how many zeros will follow your whole number at first.
75 oz package
10ozs at .25
leaves you with 65oz at .30, so 7x.30 = 2.10
2.10 + .25 = 2.35
Rita spent 20$. By multiplying 5 pairs with 4$ we can see that it will equal 20$
4y=10x
y= quarters x= dimes
4 (25) = 100 10 (10)= 100
