Adding and Subtracting in Scientific Notation
Lexus Armenta
_Date_ mama
Name
Add or subtract.
1. (1.2 x 10')+(5.7 x 10).
2. (6.7 x 10 %)-(2.3 x 10').
4. (8.6 x 10°) - 17 x 10")_
3. (5 x 10 *)+(9.5 x 10 )
6. (9.64 x 10') + (8.2 x 10')
5.(6.3 x 109) - (5 x 10-2).
7.(7 x 10-) + (8 x 10-)_

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

all you should have to do is insert 1 where the c is, representing that one car is sold.

f(c) = 250c + 500

f(1) = 250(1) + 500

f(1) = 250 + 500

f(1) = 750

he earns $750 for each car sold.

hope this you! have a happy , here's a turkey!