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Delicious77 [7]
3 years ago
12

Keisha's parents want to save twenty thousand dollars in her college savings account over the next fifteen years. They have eigh

t thousand dollars to use as an initial deposit. What simple annual interest rate do they need to meet their goal? Round your answer to the nearest tenth. Select one: A. two point five percent B. two point seven percent C. ten percent D. twelve percent
Mathematics
1 answer:
Phantasy [73]3 years ago
6 0

The correct answer is C because if you use the simple interest formula I=PRT The interest has to be $8000+X=$20,000 (X=12,000) P stands for the beginning amount of money ($8000) the R stands for the rate (you don't know this for sure yet) and the T stands for the amount of time(15 years) $12,000=$8000(R)(15) $8000(15)=120,000 $12,000=120,000(R)  $12,000/120,000=120,000(R)/120,000 R=0.1 then multiply by 100 to get the percent of 10% therefore C is your answer.
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One x-intercept of the graph of the of the cubic function f(x) = x^3 – 2x^2 – 111x – 108 is –9.
katrin2010 [14]

Answer:

The zeros of the given function are -9,-1 and 12.

Step-by-step explanation:

The given function is

f(x)=x^3-2x^2-111x-108

It is given that the x-intercept of the graph is -9, therefore -9 is a zero of the function.

Since -9 is the zero of the function, therefore (x+9) is a factor of f(x). Use synthetics method or long division method to divide the function by (x+9).

f(x)=(x+9)(x^2-11x-12)=0

f(x)=(x+9)(x^2-12x+x-12)=0

f(x)=(x+9)(x(x-12)+(x-12))=0

f(x)=(x+9)(x-12)(x+1)=0

Use zero product property and quote each factor equal to 0.

x=-9,-1,12

Therefore zeros of the given function are -9,-1 and 12.

3 0
3 years ago
If ABC Toys sold 25 “Little Drummer Boys” in June 2012 and ABC Toys has seen a 20% increase in sales of “Little Drummer Boys” ev
KIM [24]
You would want to order 44 of the toys.

25 x 120% = 30 (2013)
30 x 120% = 36 (2014)
36 x 120% = 43.2, you can have .2 of a toy so you round up to the next whole number. So 44 (2015)
Hope this helps! :D
7 0
3 years ago
Read 2 more answers
Solve the system of equations 2r + 2s = 50 and 2r – s = 17. A. r = 3, s = 11 B. r = 25, s = 33 C. r = 14, s = 11 D. r = –8, s =
scZoUnD [109]

2r = 17 + s = 50 - 2s \\ 3s = 50 - 17 = 33 \\ s = 11 \\  \\2 r = 50 - 2s \\ 2r = 50 - 2 \times 11 = 50 - 22 = 28 \\ r = 14




C. r=14, s =11
5 0
3 years ago
On a airplane,there are two seats on the left side in each row and there seats on the right side.there are 90 seats on the right
Neko [114]
There is also 90 seats
6 0
3 years ago
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What does 10+4+9+3 equal​
Usimov [2.4K]

Answer:

26.

Step-by-step explanation:

10+4=14\\ 14+3=17\\ 17+9=26.

8 0
3 years ago
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