Find a formula for a n for the arithmetic sequence.
a 1 = 8, a 4 = 18
a. 
b. 
c. 
d. 
d.
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A garden store sells Kentucky bluegrass seed for $6 per pound and ryegrass seed for $3 per pound. How much rye must be mixed with 100 pounds of bluegrass to obtain a blend that will sell for $5 per pound?
A. 50 lb B. 80 lb C. 40 lb D. 65 lb E. 30 lb
Use an amortization table to solve the problem. Round to the nearest cent.A $90,000 home was financed by making a 20% down payment and signing a 30-year mortgage at 6.25% annual interest compounded monthly for the unpaid balance. The first payment is $443.32. How much of the first month's payment will apply towards reducing the principal?
Fill in the blank(s) with the appropriate word(s).
Write the equation of the circle in standard form. Find the center and radius. Then sketch the graph.x2 + y2 - 4x - 4y - 1 = 0
A. (x - 2)2 + (y + 2)2 = 9
(h, k) = (2, -2), r = 3
B. (x + 2)2 + (y + 2)2 = 9
(h, k) = (-2, -2), r = 3
C. (x + 2)2 + (y - 2)2 = 9
(h, k) = (-2, 2), r = 3
D. (x - 2)2 + (y - 2)2 = 9
(h, k) = (2, 2), r = 3
Solve the problem.Suppose that the speed of a car, measured in miles per hour (mph), is monitored for some short period of time after the driver applies the brakes. The following table and graph relate the speed of the car to the amount of time, measured in seconds (sec), elapsed from the moment that the brakes are applied.
What general trend do the data reflect? In which of the time intervals does the speed change the most?
A. With increasing elapsed time, the speed decreases. The speed changes most during the time interval from 8 seconds to 10 seconds. B. With increasing elapsed time, the speed decreases. The speed changes most during the time interval from 2 seconds to 4 seconds. C. With increasing elapsed time, the speed increases. The speed changes most during the time interval from 8 seconds to 10 seconds. D. With increasing elapsed time, the speed increases. The speed changes most during the time interval from 2 seconds to 4 seconds.