Answer:
$12
Step-by-step explanation:
60.00 meal
x 20percent tip
you convert the 20 percent to .20
so 60
x .20
------------
12.00
Add 2.38 and 4.89 then subtract 3 giving you 4.27
1500000000000 in scientific notation is
1.5 * 10^12
That is because you move the decimal point 12 places to the left for it to become 1.5.
1.5 * 10^12
move the decimal point 12 places to the right and you got the original number, 1500000000000.
Hope this helps!