Solve the equation or inequality.
= 0
A. 
B. ?
C. 
D. 
Answer: A
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Determine whether the given value is a solution of the equation.8x + 7x = 90; 6
A. A solution B. Not a solution
Find a general expression for the slope of a tangent line to the indicated curve.y = 8 - 8x3
A. 8 - 24x2 B. -24x2 C. -24x3 D. 8 - 8x2
Solve. If needed, round money amounts to two decimal places and all other amounts to one decimal place.The manager of a coffee shop has one type of coffee that sells for $7 per pound and another type that sells for $15 per pound. The manager wishes to mix 60 pounds of the $15 coffee to get a mixture that will sell for $9 per pound. How many pounds of the $7 coffee should be used?
A. 240 pounds B. 120 pounds C. 180 pounds D. 90 pounds
Perform the indicated operations. Write the result using only positive exponents. Assume all variables represent nonzero real numbers.
A. - 
B. 
C. -3ab2
D. 