Solve the system by graphing. 4x + y = 1616x + 4y = 64
A. {(5, -4)}
B. {(0, 16)}
C. {(x, y)| 4x + y = 16}
D. ?
Answer: C
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Simplify.1.1 ÷ 2 + 8 × 0.6 - 0.52
A. 4.4 B. 5.1 C. 7.4 D. 105.1
At lunchtime, a man called his wife from his office to tell her that they needed to switch vehicles so that he could use the family van to pick up some building materials after work. The wife then left their home, traveling towards his office in their van at 32 mph. At the same time, the husband left his office in his car, traveling towards their home at 47 mph.If his office is 47.4 miles from their home, how long will it take them to meet so that they can switch vehicles?
A. 0.3 hr B. 1.1 hr C. 0.6 hr D. 1.6 hr E. 2.6 hr
Solve the problem.Find two numbers whose sum is 490 and whose product is as large as possible.
A. 245 and 245 B. 1 and 489 C. 244 and 246 D. 10 and 480
Solve the equation.3x + 
= 
+ 3x
A. 0 B. all real numbers C. no solution D. 1