Lisa leaves her house for a road trip and drives at a rate of 50 mph. keisha leaves her house 1 hour later and drives along the same route at a rate of 60 mph. at any given time t, the distance traveled can be calculated using the formula d = rt, where d represents distance and r represents rate. which system of equations can be used to find how long after lisa departs her house she is passed by keisha?
a) d=50t
d=60t-1

b) d=50t
d=60(t-1)

c) d=50t
d=59t

d) d=50(t-1)
d=60t

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752

step-by-step explanation: it is d