Solve.Alexander and Judy are 26 miles apart on a calm lake paddling toward each other. Alexander paddles at 3 miles per hour, while Judy paddles at 6 miles per hour. How long will it take them to meet?
A. 17 hr
B. 8
hr
C. 2
hr
D. 2
hr
Answer: D
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Translate the problem situation to a system of equations. Do not solve.The difference between two numbers is 22. Three times the smaller number plus the larger number is 54. What are the numbers?
A. x - y = 22; 3x + y = 54 B. x - y = 22; x + 3z = 54 C. x - y = 22; x + 3y = 54 D. x + y = 22; x + 3y = 54
Solve.The number of daily calories K needed by a moderately active man who weighs w pounds, is h inches tall, and is y years old, can be estimated by the formula 
. Find the daily caloric need of a moderately active man weighing 218 lbs, who is 70 inches tall and 45 years old.
A. 3737.44 calories B. 4335.24 calories C. 4150.44 calories D. 3922.24 calories
Solve the equation for the indicated variable.I = 
for n
A. n = 
B. n = IR(Ir - E)
C. n = 
D. n = 
Write the equation in the standard form ax2 + bx + c = 0. Then identify the values of a, b, and c. Do not actually solve the equation.x = 0.1x2 + 10.5
A. a = 0.1, b = 10.5, c = -1 B. a = 0.1, b = -1, c = 10.5 C. a = 0.1, b = -1, c = -10.5 D. a = -0.1, b = -1, c = -10.5