Solve.The sum of two numbers is 30. Their difference is 12. What are the numbers?
Fill in the blank(s) with the appropriate word(s).
21 and 9
Add: 2x = 42
x = 21
21 + y = 30
y = 9
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Provide an appropriate response.The curve y = ax2 + bx + c passes through the point (2, 12) and is tangent to the line 
at the origin. Find a, b, and c.
A. a = 4, b = 0, c = 1 B. a = 2, b = 0, c = 0 C. a = 1, b = 4, c = 0 D. a = 0, b = 1, c = 4
Determine the logarithm in base 10 of the given number to four decimal places.3.613
A. 0.5579 B. 0.0579 C. 1.2845 D. 1.7845
Write the decimal as a fraction, reduced to lowest terms.0.3
A. 3
B. 
C. 
D. 3
Solve the problem.A lot is in the shape of a right triangle. The shorter leg measures 90 m. The hypotenuse is 30 m longer than the length of the longer leg. How long is the longer leg?
A. 120 m B. 90 m C. 180 m D. 150 m