Sarah had a balance of $155 in her bank account at the start of the week. she withdrew $65.50 on monday, $23.25 on wednesday, and $26.45 on thursday. on friday she deposits $ 165.30.
a) write an expression to represent sarah's spending.
b) simplify your expression using pemdas. how much is in sarah's account at the end of the week?
c) find the difference between sarah's bank account balance at the start of the week and her current balance.

0,0

step-by-step explanation:

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

6 and 24

step-by-step explanation:

6 x 4 = 24