An airplane travels 500 miles from Oakland, California to Boise, Idaho in 4 hours against the
wind. On its return trip, with the wind, it takes only
3 hours. Find the rate of the airplane with no wind.
Find the rate of the wind. Round to the nearest
whole number.

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)

y=1/4x-4

step-by-step explanation:

step-by-step explanation:

b and c

y + 11 = (1/4)(x + 16)

step-by-step explanation: