Determine whether the pair of lines is parallel, perpendicular, or neither.y = - 
x + 4y = 
x + 4
A. Parallel
B. Perpendicular
C. Neither
Answer: B
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Solve.An economist predicts that the buying power B(x) of a dollar x years from now will be given by the formula B(x) = 0.22x. How much will today's dollar be worth in 7 years? Round the answer to the nearest cent.
A. $0.35 B. $1.53 C. $1.54 D. $0.00
Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.log5
A. log5x - 3
B. - 3log5x
C. 
log5x - 3
D. 15 - 
log5x
Set up the percent proportion for the application problem. Do not try to solve for any unknowns.In a one-day storm, Odentown received 13% of the normal rainfall for a season. Odentown received 4 inches of rain that day. How many inches of rain normally fall during the season?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Find the real solutions, if any, of the equation. Use the quadratic formula.x2 + x + 1 = 0
A. 
B. 
C. 
D. no real solution