Question

Can someone please help me with #26 ASAP.. It is due tomorrow.. Please help.. I have to get it done tonight .. If I don't get it done tonight I will get a F on it

Answer 1

a.

Friday:

`30x + 20y = 910`

Saturday:

`45x + 30y = 1365`

b.

`30x + 20y = 910`

`30x = 910 - 20y`

Divide both sides by 30:

`x = (910 - 20y)/(30)`

Simplify the fraction:

`x = (91 - 2y)/(3)`

(It is impossible to solve for specific values for x and y as seen in part c, so I'm not sure what the question is asking to solve for.)

c.

`45x + 30y = 1365`

Substitute x = (91-2y)/3 in that equation (which is Saturday's equation)

`45 * (91 - 2y)/(3) + 30y = 1365`

`15(91 - 2y) + 30y = 1365`

`1365 - 30y + 30y = 1365`

`1365 = 1365`

Hence, there is an infinite amount of solutions for x and y.