You will get the brainliest

I won't be able to solve the entire question but I will give you the formula and show you how to find the answer

4) 1.65x + 1.36y = 118.17 (i)

x + y = 79. (ii)

From the (i) equation you get

1.65x = 118.17 - 1.36y

x = (118.17 - 1.36y)/1.65 (iii)

Substituting the value of (iii) in (ii)

(118.17-1.36y)/1.65 + y = 79

When you solve it you will get the answer

After that find the value of x and y and multiply them by 1.65 and 1.36 respectively.

Then find their difference and see which class sold more and by how much.

Hope this helps you!

use the power rule  

( a b ) n = a n b n

to distribute the exponent.

apply the product rule to  

3 x 2 y 3 . ( 3 x 2 ) 2 ( y 3 ) 2

apply the product rule to  

3 x 2 . 3 2 ( x 2 ) 2 ( y 3 ) 2

raise  

3

to the power of  

2 . 9 ( x 2 ) 2 ( y 3 ) 2 multiply the exponents in   ( x 2 ) 2

.

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 2 ⋅ 2 ( y 3 ) 2

multiply  

2   by   2 . 9 x 4 ( y 3 ) 2

multiply the exponents in  

( y 3 ) 2 .

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 4 y 3

⋅

2

multiply  

3   by   2 . 9 x 4 y 6

step-by-step explanation:

hi! i think the answer is 1/2 : )