Multiply.(y + 7)(y - 1)
A. y2 + 6y - 7
B. 2y - 7
C. y2 - 6y + 7
D. 2y2 + 7
Answer: A
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Factor completely. If the polynomial is prime, state so.56s3 + 7
A. 7(2s + 1)(4s2 + 2s + 1) B. 7(2s + 1)(4s2 - 2s + 1) C. 7(2s + 7)(4s2 - 14s + 7) D. 7(2s - 1)(4s2 + 2s + 1)
Solve the problem.Halley's comet has an elliptical orbit with the sun at one focus. Its orbit shown below is given approximately by 
In the formula, r is measured in astronomical units. (One astronomical unit is the average distance from Earth to the sun, approximately 93 million miles.) 
Find the distance from Halley's comet to the sun at its greatest distance from the sun. Round to the nearest hundredth of an astronomical unit and the nearest million miles.
A. 5.57 astronomical units; 518 million miles B. 11.36 astronomical units; 1057 million miles C. 295.68 astronomical units; 27,498 million miles D. 5.68 astronomical units; 528 million miles
Solve the problem.A rare species of insect was discovered in the rain forest of Costa Rica. Environmentalists transplant the insect into a protected area. The population of the insect t months after being transplanted is P(t) = 
.a) What was the population when t = 0?b) What will the population be after 10 years?c) What is the largest value the population could reach?
What will be an ideal response?
Multiply the polynomials using the special product formulas. Express the answer as a single polynomial in standard form.(2x - 4)3
A. 8x3 + 48x2 + 96x + 64 B. 4x2 - 16x + 16 C. 8x3 - 48x2 + 48x - 64 D. 8x3 - 48x2 + 96x - 64