Shirts-2-Go sells t-shirts for a base price of $12 per shirt plus a fixed fee of $3 shipping and handling for the whole order. Shirts PLUS sells t-shirts for a base price of $8 per shirt plus a fixed fee of $23 shipping and handling for the whole order. Let x represent the number of shirts ordered and let y represent the total cost of the order. y = 12x + 3 y = 8x + 23 How many shirts would you have to purchase for the total cost to be the same at both companies? shirts

x= 5 shirts

Step-by-step explanation:

rewrite equation:

12x+3=8x+23

(now u have to combine like terms so it's letters on one side of the equal sign and numbers on the other.)

12x-8x=23-3

(simply solve on each side of the equation to get...)

4x=20

and 20/4 is 5 so therefore it's 5 shirts.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

ummm seems that u didnt post the attachement !