Answer:
Step-by-step explanation:
Given that:
Keiko sold 3 less than three-fourths of his sister's sale.
To find:
Expression that represents what Keiko sold ?
Solution:
First of all, let the sales done by Keiko's sister =
Now, let us consider the Keiko's sale word by word.
3 less than three-fourths of his sister's sale.
- Three fourth of his sister's sale i.e.
- 3 less
i.e. subtract 3 from the expression obtained in 1st line.
So, sales done by Keiko =
So, correct answer is:
Answer:
Option D (r(t) = 3.50t +25
; r(8) = 53)
Step-by-step explanation:
The fixed cost to rent the kayak $25. This is the cost which remains fixed irrespective of the usage of the kayak. The variable cost of using the kayak is the cost which depends on the usage of the kayak. It is mentioned that the kayak is used for 4 hours and the company charges $3.5 for every half hour. The cost function is given by:
r(t) = 25 + 3.5t ; there r is the total cost of using the kayak and t is the number of half-hours the kayak is used.
4 hours means that there are 8 half-hours. Therefore, t=8. Put t=8 in r(t).
r(8) = 25 + 3.5*(8) = 25 + 28 = 53.
Therefore, Option D is the correct answer!!!
Answer:
0.000001
Step-by-step explanation:
Answer: total travel 270
Step-by-step explanation:
Answer:10
Step-by-step explanation:
Notice that investment Q’s value grows linearly while investment R’s value grows exponentially. In conclusion, investment R’s value will first exceed investment Q’s value in year number 10