Use a calculator to solve the equation on the interval [0, 2?). Round the answer to two decimal places.cos x = -0.70
A. 0.80, 3.94
B. 2.35, 3.94
C. 2.35, 5.49
D. 0.80, 2.34
Answer: B
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Identify the figure as a line, a ray, a line segment, or an angle. Then name the figure using the given points.
A. line; 
B. angle; ?BDG or ?GDB or ?D
C. angle; ?DBG or ?GBD or ?B
D. angle; ?DGB or ?GDB or ?G
Solve the problem.Boyle's law states that if the temperature of a gas remains constant, then PV = c, where P is the pressure, V is the volume, and c is a constant. Given a quantity of gas at constant temperature, if V is decreasing at a rate of 12 in.3/s, at what rate is P increasing when P = 50 lb/in.2 and V = 80 in.3?
A. 
lb/in.2-s
B. 
lb/in.2-s
C. 
lb/in.2-s
D. 
lb/in.2-s
Provide an appropriate response.Jamie used the Pythagorean theorem to find the length of the missing side of the triangle shown. 
He did the following calculations:x2 + 72 = 102?x2 = 102- 72?x2 = 51?x = 
?x ? 7.1Why did Jamie not get the correct answer?
What will be an ideal response?
Solve the problem.A population of algae consists of 4000 algae at time t = 0. Conditions will support at most 300,000 algae. The rate of growth of algae is proportional both to the number present (in thousands) and to the difference between 300,000 and the number present (in thousands). Given that the constant of proportionality is 0.01, a differential equation is 
Approximate the number of algae present when t = 2, using h = 0.5.
A. about 128 thousand B. about 133 thousand C. about 141 thousand D. about 125 thousand