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ElenaW [278]
2 years ago
7

A family of four went to dinner at a local restaurant. Three of the family members ordered the special dinner that costs $12.88

each and the fourth family member ordered the hamburger and fries combo that costs $6.78. If they want to leave a 15% tip, which of the following expressions represents the amount of tip they should leave?
A. (12.88+6.78)×0.15

B. (3×12.88+6.78)×0.15

C. 3×12.88+6.78

D. [3×(12.88+6.78)]×0.15

​
Mathematics
1 answer:
mafiozo [28]2 years ago
3 0
Letter B would be your corrected answer
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Use differences to find a pattern in the sequence.
Damm [24]

Answer:

451

Step-by-step explanation:

7, 17, 30, 51, 85, 137, 212

Differences between              Difference between             Difference between

numbers in sequence             first differences                    second differences

17 - 7 = 10

30 - 17 = 13                                          3      

51 - 30 = 21                                          8                                                   5

85 - 51 = 34                                         13                                                  5

137 - 85 = 52                                       18                                                  5

212 - 137 = 75                                      23                                                 5

                          75 + 28 = 103

212 + 103 = 315                                  28                                                 5

                         103 + 33 = 136

315 + 136 = 451                                   33                                                5

3 0
3 years ago
Can someone find the sum?
viktelen [127]
X^2 + x + 1 + 3x^2 + 3x + 2. Just combine the like terms:

x^2 + 3x^2 + x + 3x + 1 + 2

4x^2 + 4x + 3. <--- the sum.
5 0
3 years ago
Read 2 more answers
Help plz right answers only if you give wrong answer or link you get reptored.
Inessa [10]

Answer:

1. The cost increases $0.30 each time 1 goldfish is

added.

7 0
3 years ago
7.6x = 64 is approximately 3.05.<br> is this the solution?
lisov135 [29]
7.6x = 64
x = 64/7.6
x = <span> <span> <span> 8.4210526316 </span> </span> </span>
So, 3.05 is NOT the solution

3 0
3 years ago
Please help me quickly (15 points)
sladkih [1.3K]

Answer:

sorry bro sorry sorry sorry sorry sorry sorry

6 0
3 years ago
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