Solve. 5(x + 3) = 10x + 9
A. 0.8
B. -1.2
C. -0.8
D. 1.2
Answer: D
Mathematics
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Use the formula for 
to evaluate the expression.
A. 15 B. 30 C. 4 D. 180
Mathematics
Solve the problem.A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 27 marbles in it. At least how many green marbles does it have?
A. At least 9 green marbles B. At least 10 green marbles C. At least 18 green marbles D. At least 14 green marbles
Mathematics
Determine whether or not the function is one-to-one.
A. No B. Yes
Mathematics
If a ball is thrown directly upward with a velocity of 48 ft/s, its height (in feet) after t seconds is given by y = 48t-16t². What is the maximum height attained by the ball?
What will be an ideal response?
Mathematics