Misaki

Square the original amount

I think it's asking you if the vector is correct proof, or not. 

Hint: it is. 

45 degrees or 0.785 radians

Such as? Give me an example

-13 from both sides so

x/8=4

multiply both sides by 8

so x=32 

Camera costs $300 

she saves $15 each week 

in how many weeks will she have enough money for the camera?

300/15=20 so in 20 weeks

the equation algebraically is 

Let C denote the cost of the camera 

let W denote the amount she saves each week 

C/W=number of weeks 

It's already real and it can't be simplified any further.

7 hours reading each week

6 hours of watching tv each week

4 hours of playing outside each week

The associative property of addititon is (a+b)+c=a+(b+c)

let 7 = a

let 6 = b

let 4 = c

so you have (7+6)+4=7+(6+4)

the two expressions are (7+6)+4 and 7+(6+4) 

Do arc tan or tan^-1 so that tan(2)^-1=x but i'm not sure if you're talking in degree's or radians.

What is the problem?