Answer:
19%
Step-by-step explanation:
R = 19%/year
Equation:
r = (1/t)(A/P - 1)
r = (1/2)((5520/4000) - 1) = 0.19
r = 0.19
Converting r decimal to R a percentage
R = 0.19 * 100 = 19%/year
The interest rate required to get a total amount, principal plus interest, of $5,520.00 from simple interest on a principal of $4,000.00 over 2 years is 19% per year.
Answer:
68.7
Step-by-step explanation:
We need only estimate (approximate) the value of f(x) at x = 5:
f(x)=6.87(2.5)(x – 1) → f(5)=6.87(2.5)(5 – 1).
Note that 2.5(4) = 10, so now we have (exactly) f(5)=6.87(10), which, in turn, is
equal to 68.7.
Answer:
-5 coach tickets
-8 first class tickets
Step-by-step explanation:
let x be the number of coach tickets and y the number of first class tickets:
![x+y=13\ \ \ \ \ \ ...i](https://tex.z-dn.net/?f=x%2By%3D13%5C%20%5C%20%5C%20%5C%20%5C%20%20%5C%20...i)
Given that coach tickets costs $260 each, and first class tickets $1080 and that the total fare budget was $9940:
![260x+1080y=9940\ \ \ \ \ \ \ \ \ ...ii](https://tex.z-dn.net/?f=260x%2B1080y%3D9940%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20%5C%20...ii)
#From equation i, make x the subject of the formula:
![x=13-y](https://tex.z-dn.net/?f=x%3D13-y)
#Substitute x in ii;
![260x+1080y=9940\\\\260(13-y)+1080y=9940\\\\3380-260y+1080y=9940\\\\820y=6560\\\\y=8\\\\x=13-y\\\\\therefore x=13-8=5](https://tex.z-dn.net/?f=260x%2B1080y%3D9940%5C%5C%5C%5C260%2813-y%29%2B1080y%3D9940%5C%5C%5C%5C3380-260y%2B1080y%3D9940%5C%5C%5C%5C820y%3D6560%5C%5C%5C%5Cy%3D8%5C%5C%5C%5Cx%3D13-y%5C%5C%5C%5C%5Ctherefore%20x%3D13-8%3D5)
Hence, Sarah bought 5 coach tickets and 8 first class tickets.
Answer:
A. Linear
Step-by-step explanation:
Points in Y row are all in a +5 relationship