Solve the system by the elimination method. x + 7y = 214x + 8y = 24
A. {(1, 2)}
B. {(-3, 0)}
C. {(0, 3)}
D. ?
Answer: C
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Solve the three-part linear inequality. Graph the solution set on a number line, and express the solution using interval notation.15 ? 5x + 5 ? 35
A. (-6, -2)
B. [2, 6]
C. (2, 6)
D. [-6, -2]
Suppose that a car rental agency charges a fixed amount per day plus an amount per mile for renting a car. Heidi rented a car one day and paid $100.00 for 300 miles. On another day she rented a car from the same agency and paid $150.00 for 550 miles. Determine the linear function that the agency could use to determine its daily rental charges.
A. f( x ) = 0.4x - 40 B. f( x ) = 0.4x + 40 C. f( x ) = -0.2x + 40 D. f( x ) = 0.2x - 40 E. f( x ) = 0.2x + 40
Multiply.9.57 × 88.81
A. 84.99117 B. 8499.117 C. 849.9117 D. 84,991.17
Evaluate the algebraic expression for the given value or values of the variable(s).2(x + 1) + 21;
x = -4
A. 7 B. 35 C. -15 D. 15