How do i do this problem? cookies are on sale! today each cookie costs $0.75 less than the normal price! right now i you buy 7 of them, it will only cost $2.80!

write an equation to determine the normal price of each cookie (c)

find the normal price of each cookie

could you help simplify the equation? Im still trying to figure it out

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)

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.