Solve the inequality by the test-point method. Write the solution in interval notation.x2 + 4x + 4 ? 0
A. [2, ?)
B. (-?, -2] ? [-2, ?)
C. {2}
D. {-2}
Answer: D
You might also like to view...
Find Dxy.sinh (tan 9x)
A. 9 cosh(tan 9x) sec2 9x
B. 
C. - 9 cosh(tan 9x) sec2 9x
D. cosh(tan 9x) sec2 9x
Two measurements are given. Find the absolute difference and then find the relative difference as a percentage. Assume that the first quantity is the compared value and the second quantity is the reference value. Round answers to the nearest tenth if necessary.In a certain country, the life expectancy for men is 70.6 years while the life expectancy for women is 75.7 years.
A. Absolute difference: 5.1 years Relative difference: 7.2% B. Absolute difference: -5.1 years Relative difference: -7.2% C. Absolute difference: -5.1 years Relative difference: -6.7% D. Absolute difference: -5.1 years Relative difference: -0.7%
Provide an appropriate response.Use the max-min inequality to find upper and lower bounds for 
and 
. Add these to arrive at an estimate of 
.
What will be an ideal response?
Provide an appropriate response.To encourage an even flow of customers, a restaurant varies the price of an item throughout the day. From 6:00 P.M. to 8:00 P.M. customers pay full price. At lunch from 10:30 A.M. until 2:30 P.M. customers pay half price. From 2:30 until 4:30 customers get a dollar off the lunch price. From 4:30 P.M. until 6:00 P.M. customers get $5.00 off the dinner price. From 8:00 until closing time at 10:00 customers get $5.00 off the dinner price. Write a compound function to represent the cost of an item throughout the day for a dinner price of d.
What will be an ideal response?