Yesterday, davis bought 8 pen boxes. each box contained 10 pens.4/5 of the pens were blue. how many pens were there in total?

Step-by-step explanation:

4/5 of 10 is 8. This means that 8 pens out of each box were blue. If there were 8 boxes, you just multiply 8 by 8 to get 64 blue pens out of 80

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

y-3=-3/2(x+4)

ur very much welcome