At what percent by simple interest will a sum of money double itself in 5 years 4 months?

A sum of money lent out at simple interest amounts to Rs. 1240 in 4 years and Rs 1360 in 6 years. Find the sum and rate percent?

The simple interest on a certain sum is 16/25 of the sum. Find the rate percent and time if both are numerically equal?

At what rate percent per annum, simple interest will be Rs. 3600 amount to Rs. 4734 in 3 ½ years?

A group of friends decided to divide the  cost of a trip equally among themselves. When two of the friends decided not to go on the trip, those remaining still divided the  cost equally, but each friend's share of the cost increased by.  How many friends were in the group originally?

Jaime is preparing for a bicycle race. His goal is to bicycle an average of at least 280 miles per week for 4 weeks. He bicycled 240 miles the first week, 310 miles the second week, and 320 miles the third week. Which inequality can be used to represent the number of miles, x , Jaime could bicycle on the 4th week to meet his goal?

A website-hosting service charges businesses a onetime setup fee of  plus  dollars for each month. If a business owner paid  for the first 12 months, including the setup fee, what is the value of   ?

What value of  satisfies the equation above?

A laboratory supply company produces graduated cylinders, each with an internal radius of 2 inches and an internal height between 7.75 inches and 8 inches. What is one possible volume, rounded to the nearest cubic inch, of a graduated cylinder produced by this company?

In the xy-plane, the graph of  intersects the graph of y =x at the points (0,0) and (a, a). What is the value of a?

Snow fell and then stopped for a time. When the snow began to fall again, it fell at a faster rate than it had initially. Assuming that none of the snow melted during the time indicated, which of the following graphs could model the total accumulation of snow versus time?

The line with the equation  is graphed in the xy-plane. What is the x-coordinate of the x-intercept of the line?

The table above shows some values of the functions w and t . For which value of x is  ?

Solve each inequality and graph the solution :

Note:
When we have an inequality with the symbols < or > , we use dotted lines to graph them. This is because we do not include the end point of the inequality.

The graph above shows the positions of Paul and Mark during a race. Paul and Mark each ran at a constant rate, and Mark was given a head start to shorten the distance he needed to run. Paul finished the race in 6 seconds, and Mark finished the race in 10 seconds. According to the graph, Mark was given a head start of how many yards?