Algebra Answers

The cost of a family membership is $58 per month plus a one time start up fee of $129. If the family spent $651 how many month is there membership?

A concert ticket that originally cost $46.50 is on sale for $38.75. What is the percent of decrease, rounded to the nearest tenth?
A. 16.7%
B. 20%
C. 22.3%
D. 24.6%

A triangle has side lengths of 4x-2. A square with the same perimeter has side lengths of x+6. What is the perimeter of each shape?

A pump can fill a milk tank in 2 hours. Because of leakage problem it took 20 minutes more to fill the tank. The plant supervisor wants to find how much time would the leak take to empty the full tank

The stopping distance d of an automobile is directly proportional to the square of its speed v. A car required 45 feet to stop when its speed was 50 miles per hour. Find a mathematical model that gives the stopping distance d in terms of its speed v.
Your answer is d=

State sales tax y is directly proportional to retail price x. An item that sells for 186 dollars has a sales tax of 14.42 dollars. Find a mathematical model that gives the amount of sales tax y in terms of the retail price x. What is the sales tax on a 250 dollars purchase?

Harry's room is rectangular and has walls of length 2x x + 3. Given that Harry's room has a perimeter of 18 meters what is x and the equation ax+b=c

The atmospheric pressure P in pounds per square inch (psi) is given by
P = 14.7 e−0.21 awhere a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 13.11 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round your answer to the nearest foot.)

If Sn denotes the sum of n terms of a G.P. whose first term of a and common ratio is r find S1+S2+S3+----+S2n-1 =?

Show that the ratio of the sum of n terms of two G.P. having the same common ratio is equal to the ratio of their nth terms.