My sister is 18 years old. My brother says that his age minus eighteen is equal to my sister's age. How old is my brother?
Enter an equation, using b as your variable, to find how old my brother is.
The equation is
My brother is
years old.

The brother is 36 years old.

Step-by-step explanation:

b = brothers age

b - 18 = 18 | Given

b = 36 | Add 18 to both sides to cancel out -18 and get his age.

y-1700=200(x+4)

step-by-step explanation:

200(x+4) is 200x + 800 she is saving 200 per week x is the weeks and the -1700 is. us that’s howmuch she already had

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation: