Rachel needs to wite 3 book reports with b pages and 3 science reports with s pages during the school year. write an algebraic expression for the total number of pages rachel will need to write.

3 b + 3 s

Step-by-step explanation:

Hi, to answer this question we have to write an algebraic expression with the information given:

She needs to write:

So, the total number of pages is equal to the product of the number of book reports(3) and the number of pages of each book report (b) , plus the product of the number of science reports (3) and the number of pages of each science report (s).

Mathematically speaking:

3 b + 3 s

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1

the bolded word " farsighted" could be replaced with visionary.