What two numbers have a sum of 217 and difference of 85?
How do you solve this system of equations?
-3x + 2y = 23
5x + 2y = -17
The length of a rectangle is seven more than triple the width. If the perimeter is 174 inches, find the dimensions.
Find the 60th term of the arithmetic sequence -14, -25, -36, .....
Find the value of two numbers, when their sum is 21 and their difference is 7.
Kit is twice as old as his friend Sam. Sam is 5 years older than Cara. In 5 years, Kit will be three times as old as Cara. How old is Sam?
A clerical worker takes 2 times as long to finish a job as it does an executive secretary. Working together, it takes them 5 hours to finish the job. How long would it take the clerical worker, working alone, to finish the job?
Ten years ago, the age of Mark was half of Mary’s age. If the ratio of their present age is 3:4, what will be the total of their present age?
Solve the system of equations.
-7 + y = (6/5)x
-9x - 5y = 40
A recording studio charges musicians an initial fee of $60 to record an album. Studio time costs an additional $75 per hour. Which function represents the total cost in dollars, C(t), of recording an album as a function of studio time in t hours?