Answer: 80%
Step-by-step explanation:
Answer:
<h2><u>Toothpaste</u></h2>
Smiles = $0.215 per ounce
Tartar Free = $0.2075 per ounce
Bright = $0.19875 per ounce
I will buy Bright because it is the cheapest.
<h2><u>Sunscreen Lotion</u></h2>
Bronze Smart = $0.23625 per ounce
Ray Block = $0.25 per ounce
Healthy Glow = $0.3725 per ounce
I will buy Bronze Smart because it is the cheapest sunscreen here.
<h2><u>Deodorant</u></h2>
Fresh = $0.29875 per ounce
Clean Scent = $0.259 per ounce
Spring = $0.24833333333 per ounce
I will buy Spring because it costs less than the other deodorants.
Step-by-step explanation:
divide the cost by the ounces and you will get the cost per ounce
Have a nice day! :-)
Answer:
I) 54.2 X 94 = 5094.8
J) 36.39 X 28 = 1018.92
K) 43.73 X 74.4 = 3253.512
Exponentail thingies
easy, look at all them them, see that they have 5 in common?
rremember how esay it was to factor
ax^2+bx+c=0
now we have
5^(2x)-6(5^x)+5=0
remember that 5^(2x)=(5^2)^x or (5^x)^2
in other words, we can rewrite it as
1(5^x)^2-6(5^x)+5=0
if yo want, replace 5^x with a and factor
1a^2-6a+5=0
(a-1)(a-5)=0
a=5^x
(5^x-1)(5^x-5)=0
set each to zero
5^x-1=0
5^x=1
take the log₅ of both sides
x=log₅1
5^x-4=0
5^x=4
take the log₅ of both sides
x=log₅4
x=log₅1 and/or log₅4
second quesiton
same thing
1(2^x)-10(2^x)+16=0
factor
(2^x-8)(2^x-2)=0
set each to zero
2^x-8=9
2^x=8
x=3
2^x-2=0
2^x=2
x=1
x=3 or 1
first one
x=log₅1 and/or log₅4
second one
x=1 and/or 3
Recall the inclusion/exclusion principle:
which means
