Find b such that (7x + 4)/b + 13 = x has a solution set given by {- 6}.

After a 30% price reduction, you purchase a 50″ 4K UHD TV for \$245. What was the television's price before the reduction?

In Exercises 35–54, solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? A = 2lw + 2lh + 2wh for h

In Exercises 35–54, solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? S = C/(1 - r) for r

In Exercises 35–54, solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? E = mc² for m

Solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? V = (1/3)Bh for B

In Exercises 35–54, solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? A = (1/2)bh for b

Solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? D = RT for R