Charlie mixes 15 liters of 17% acid solution with a 29% acid solution, which results in 23% acid solution. let x represent the number of liters of 29% solution used and let y represent the number of liters of mixture. which system of equations can be used to find the number of liters of 29% acid solution in the mixture? y = x + 15; 0.29y = 0.23x + 2.55 y = x + 15; 0.23y = 0.29x + 2.55 y = x + 15; 0.23y = 0.29x + 4.35 y = x + 15; 0.29y = 0.23x + 3.45

(15(.17)+.29x)/(15+x)=.23

2.55+.29x=3.45+.23x

.06x=.9

x=15

So 15L of the 29% solution was added to the 15L of 17% solution to make  

30L of 23% solution.

entering that problem on the tube might get you an answer

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.