Answer:
A. 2x-4
Step-by-step explanation:
Let his brother's age be
.
Derrick is 4 years younger than twice his brother's age. Which means derrick is 4 years younger than
.
Which makes derricks age
since he is 4 years younger
(new -original)/original * 100
(36-20)/20 * 100
16/20 * 100
.8*100
80
80% increase
$18.11 because 20.75/x=100/15
<span>(120.75/x)*x=(100/15)*x - </span>we multiply both sides of the equation by x
<span>120.75=6.6666666666667*x - </span>we divide both sides of the equation by (6.6666666666667) to get x
<span>120.75/6.6666666666667=x </span>
<span>18.1125=x </span>
<span>x=18.1125</span>
Answer:
43x-19y+74
hope this helps!!:)
Step-by-step explanation:
Answer:

Step-by-step explanation:
You are given the function g, for which

Find some values of this function:

You can see that ecah next value is 4 less than previous one, so these values form an arithmetic sequence and you have to find the nth term of this sequence. The nth term of arithmetic sequence is

where

So,
