Solve the system of equations by elimination, if a solution exists.
A. No solution
B. x = 0, y = 0
C. x = 30, y = -15
D. x = -30, y = 15
Answer: A
Mathematics
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Solve.William earned an extra $9000 last year from a part-time job. He invested part of the money at 8% and the rest at 10%. He made a total of $800 in interest. How much was invested at 10%?
A. $4000 B. $4500 C. $7000 D. $5000
Mathematics
Decide whether the relation defines a function.
A. Not a function B. Function
Mathematics
Find the value of the expression.ln e
A. e B. 1 C. -1 D. 0
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 2x B. -6 C. x2 D. 6
Mathematics