Answer:
Sale=238 Discount=42
Step-by-step explanation:
15% of 280 is 42...So 280 - 42 =238
Answer:
$15348
Step-by-step explanation:
i = prt is the simple interest equation
i = 12,000(0.031) = 372
i = 372*9 = 3348
12000+3348 = $15348
Answer:
5, -25, 125, -625
Step-by-step explanation:
A geometric sequence is where a number is divided or multiplied by same number continuously
in the third option the number are multiplied by (-5) continuously
Answer:
<em>The products did cost $173.9 in 2010</em>
Step-by-step explanation:
<u>Exponential function</u>
Two variables y and x are related as an exponential function if they comply:
![F=Cr^{kx}](https://tex.z-dn.net/?f=F%3DCr%5E%7Bkx%7D)
where C is the initial value of F, r is the ratio, and k is a proportional constant.
The situation described in the question is modeled as
![F=Cr^{n}](https://tex.z-dn.net/?f=F%3DCr%5E%7Bn%7D)
Where F is the final value of the cart of groceries in 2010, C = $150 is its value in 2005, r is the yearly rate of increase. n is the number of years
. So
![F=150\ 1.03^{n}](https://tex.z-dn.net/?f=F%3D150%5C%201.03%5E%7Bn%7D)
If we set n=5 (from 2005 to 2010):
![F=150\ 1.03^{5}](https://tex.z-dn.net/?f=F%3D150%5C%201.03%5E%7B5%7D)
![F=\$173.9](https://tex.z-dn.net/?f=F%3D%5C%24173.9)
The products did cost $173.9 in 2010
Answer:
8c²+66c+16
Step-by-step explanation:
By expanding paranthesis we get:
(c+8)(8c+2)=8c²+64c+2c+16=8c²+66c+16