Translate the sentence into an equation. Use x to represent the unknown number. A number increased by 15 equals 26.
A. 26x = 15
B. x + 26 = 15
C. x + 15 = 26
D. 15x = 26
Answer: C
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A delivery truck must deliver packages to 6 different store locations (A, B, C, D, E, and F). The trip must start and end at A. The graph below shows the distances (in miles) between locations. We want to minimize the total distance traveled.
The nearest-neighbor tour starting with vertex A is given by:
A. A, B, C, D, E, F, A. B. A, E, F, C, B, D, A. C. A, C, D, B, E, F, A. D. A, D, F, E, C, B, A. E. none of these
Divide.
A. -6x - 5
B. -6x2 - 5
C. -6x - 20
D. 
- 5
Solve. Remember to insert units when writing your answer.In a lab experiment 600 ml of salt water were added to 1.98 L of water. Later, 250 ml of the solution were drained off. How much of the solution still remains?
A. 421.8 ml B. 548 ml C. 2599.8 ml D. 2330 ml
Solve the system graphically. 
A. (5, -10) B. Inconsistent with independent equations C. (0, 10) D. Consistent with dependent equations