URGENT HELP PLEASSE

5/16

Step-by-step explanation:

Each number can happen in exactly one way (one sets the digit of tens and the other of ones).

We know that the law of divisibility by 3 is "sum of digits has to be divisible by 3", so let's examine the numbers:

11

13

15 - Yes

17

31

33 - Yes

35

37

51 - Yes

53

55

57 - Yes

71

73

75 - Yes

77

So it's 5 out of 16 options.

We could do it by examining the relation and modulus shifts with each digit, but for 16 numbers it's seriously faster to just list them.

3, 12, 48, 384, 1536, 6144, 24576, 98304

step-by-step explanation:

just keep timing it by 4.

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: