$1.45
1.50 times .05= 0.075
the sales tax was 0.075 cents, so if you subtract that from $1.50, you get the price before sales tax
Step-by-step explanation:
212×3= 636 two hundred and twelve multiple by three equals six hundred and thirty six
Answer:
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Answer:
f (9) = -21
Step-by-step explanation:
f (x) = -x^2 + 5x + 15
so, f (9) =
- -(9×9) + (5×9) + 15
- -81 + 45 + 15
- -81 + 60
- -21
The answer is 93
If we sorted out the number of each hours, the sequence will look like this
57 _ 69 _ 81 _ x _ 105
(in which x is the fourth hour of work)
We can see from the sequence that each hours, the mailman add additional 12 letters.
(69 - 57 = 12)
(81 - 69 = 12) . . . . proof
So, the amount of letters on the fourth hour would be:
81 letters + 12 letters = 93 Letters