Area formula for rectangles: L x W
Answer: 3 x 2a + 3 x 5 = 3 x 2a x 5
You know that the expressions are equivalent, because when you solve for a you get a = 5/8 or 0.625
Count how long it is in the spaces
So, taking 149.98 and subtracting the non-taxable total, 26.95, you are left with 123.03, which to equal 10.07 would have to be multiplied by 0.0819, hence the sales tax is 0.0819.
Answer:
you have two books left over
Step-by-step explanation:
if you divide 30 by 7 you will get 4.2
that hows you have four boxes
to check yourself you can times 7 by 4 which will give you 28 and that shows you have two that wont fit
