What is the highest unit price per kazoo if 25 kazoo cost $10 50 kazoo cost $18.50 and 80 kazoos cost $27.20

For this, you have to calculate Unit rates of all of them.

Unit rate of sample 1, = 10/25 = $0.4

U.R. of sample 2, = 18.50/50 = $0.37

U.R. of sample 3, 27.20/80 = $0.34

So, first one is costlier!!!

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