Liz made a 13-minute long-distance call that cost her $1.45 for the first 3 minutes and $.22 a minute for each extra minute. How much did
the call cost her?
a. $3
b. $4.31
c. $.37
d. $3.65

$6.55

Step-by-step explanation:

C = 1.45(3) + .22(13-3)

= 4.35 + 2.20

= 6.55

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

they go with it happens or they mite give a chance?

step-by-step explanation: