Find the indicated sum. Use the formula for the sum of the first n terms of a geometric sequence.
A. -1640
B. -5140
C. 24
D. 248
Answer: A
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The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 5, x = -9
A. r = 
B. r = 
C. r = 
D. r = 
Solve the problem. Round to the nearest cent.A sewing supply store purchases thread at a list price of $180 per 100 spools. The supplier offers a trade discount of 10/33
. Find the net cost of 200 spools of thread.
A. $216.00 B. $240.00 C. $0.54 D. $108.00
Write the first six terms of the arithmetic sequence with the given properties. ? a = 8, 3rd term is 0 ?
A. 2, -2, 0, -10, -14, -18 B. 8, 12, 0, 20, 24, 28 C. 2, 6, 0, 14, 18, 22 D. 8, 4, 0, -4, -8, -12 E. none of the above
Solve the problem. Assume that all pizzas are circular in shape and that the measurement given in the table is the diameter of the pizza in inches. Use 3.14 as the approximate value of ?. Use the table below to find the cost per square inch for each size of veggie pizza. Round your answers to the nearest thousandth. Which size is the best buy?
Cheese$4.20$7.20$10.70Veggie$5.70$7.50$16.00Pesto$5.80$10.30$13.90
A.
| Small | ? $0.037 |
Large ? $0.026
Best buy: medium
B.
| Small | ? $0.148 |
Large ? $0.104
Best buy: medium
C.
| Small | ? $6.748 |
Large ? $9.616
Best buy: small
D.
| Small | ? $0.259 |
Large ? $0.364
Best buy: medium