Determine if the lines parallel, perpendicular, or neither.L1: y = 9x - 8L2: y = 9x + 4
A. neither
B. perpendicular
C. parallel
Answer: C
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Solve the problem.The polynomial function I(t) = -0.1t2 + 1.8t represents the yearly income (or loss) from a real estate investment, where t is time in years. After how many years does income begin to decline? Round to the nearest tenth of a year, if necessary.
A. 18 years B. 9 years C. 8 years D. 12 years
Solve the problem.A rumor is spread at an elementary school with 1200 students according to the model 
where N is the number of students who have heard the rumor and d is the number of days that have elapsed since the rumor began. How many students will have heard the rumor after 5 days?
A. 495 students B. 406 students C. 629 students D. 661 students
Translate the phrase to an algebraic expression. Use "x" to represent "a number". 4
subtracted from a number
A. x - 4
B. 4
- x
C. x ÷ 4
D. -x - 4
Simplify. Express the answer using positive exponents.
2
A. - 
B. 
C. 
D. 