Solve using the problem-solving strategy for systems of linear equations.Two cars leave a city and head in the same direction. After 7 hours, the faster car is 63 miles ahead of the slower car. The slower car has traveled 315 miles. Find the speeds of the two cars.
A. 45 mph and 54 mph
B. 90 mph and 99 mph
C. 47 mph and 56 mph
D. 36 mph and 45 mph
Answer: A
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Evaluate the integral.
A. - 
B. 
C. - 
D. 
Answer the question.Which of the statements below suggests an appropriate level of precision?
A. My temperature this morning is 37.6° F. B. My temperature this morning is 37.612° F. C. My temperature this morning is 40° F. [to the nearest 10 degrees] D. My temperature this morning is 37.6127° F.
Solve the problem.How many different 3-topping pizzas can be made if there are 10 individual toppings to choose from? Assume that no topping is used more than once and that the order of the toppings on the pizza is unimportant.
A. 120 B. 6 C. 1000 D. 720
Find the equivalent fractions with the indicated denominator.
= 
A. 16 B. 1 C. 4 D. 64