Solve the system of equations by elimination.
x - y = 10
x + 2y = 11
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the sum of the terms of the arithmetic sequence.1, 3, 5, 7, . . ., 45 n = 23
A. 1058 B. 1104 C. 552 D. 529
Mathematics
Solve the problem.Alex always takes $10 more than he anticipates needing on a date. Tonight Alex takes $30 on his date with Judith. Use the equation 
to find the amount of money, x, Alex anticipates needing for this date.
A. $40 B. $30 C. $10 D. $20
Mathematics
Translate the percent problem to a basic percent equation using x for the unknown value. Do not solve.79 is 28% of what number?
A. 0.28 ? 79 = x B. x + 0.28 = 79 C. x ? 79 = 0.28 D. x ? 0.28 = 79
Mathematics
Find the percent. Round to the nearest tenth of a percent.3.0 meters is what percent of 23 meters?
A. 766.7% B. 0.1% C. 13% D. 7.7%
Mathematics