Graph the function using its vertex, axis of symmetry, and intercepts.f(x) = -2x2 - 20x - 53 
A. vertex (-5, -3)
intercept (0, -53)
B. vertex (5, -3)
intercept 
C. vertex (-5, -3)
intercept 
D. vertex (5, -3)
intercept (0, -53)
Answer: A
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Solve the proportion.
= 
A. 20
B. 
C. 
D. 
A solution is an acid if its pH is less than 7 and a base if its pH is greater than 7. The pH is defined by 
where [H+] is the concentration of hydrogen ions in the solution. Use this information to answer the question.A mixture has a pH of 9.8. Find the concentration of hydrogen ions [H+] in the mixture. Is the mixture an acid or a base?
A. 109.8, acid B. 10-9.8, base C. 109.8, base D. 10-9.8, acid
Find the perimeter. Use 3.14 for ?.
A. 42.98 in. B. 31.99 in. C. 49.98 in. D. 38.99 in.
The area of a rectangle is 54 square centimeters, and its perimeter is 30 centimeters. Find the dimensions of the rectangle. ? Please enter your answer as two numbers without the units, separated by a comma.
What will be an ideal response?