Add a constant term to the expression to make it a perfect square.x2 + 
x
A. 
B. 
C. 36
D. 
Answer: B
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Use ratios or conversion factors to convert the measures of time. Round to hundredths.420 seconds to minutes
A. 7 min B. 13 min C. 3 min D. 17 min
Factor the polynomial completely. If the polynomial cannot be factored, say it is prime.x2 + 4xy - 21y2
A. (x - 3y)(x + 7y) B. (x + 3y)(x + y) C. (x + 3y)(x + 7y) D. Prime
Multiply to find the exact answer. Express the answer as a whole or mixed number when possible and simplify.2
? 23
A. 61
B. 60
C. 51
D. 46
Solve the problem.Two cars leave a city and head in the same direction. After 7 hours, the faster car is 56 miles ahead of the slower car. The slower car has traveled 385 miles. Find the speeds of the two cars.
A. 55 mph and 63 mph B. 47 mph and 55 mph C. 80 mph and 88 mph D. 57 mph and 65 mph