The double-line graph shows temperature highs and lows for a week. 
On what day of the week was the difference between the high temperature and the low temperature the greatest? What was this difference in temperature?
Fill in the blank(s) with the appropriate word(s).
Wednesday; 14°F
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Solve the problem.A water tank is shaped like an inverted cone with height 9 m and base radius 1.5 m (see figure). If the tank is full, how much work is required to pump the water to the level of the top of the tank and out of the tank? Express the answer in terms of ?. 
A. 198,450 J B. 5,358,150? J C. 893,025? J D. 148,837.5? J
Evaluate the geometric series or state that it diverges.
A. 
B. - 10
C. - 
D. 18
Write the rate as a fraction in simplest form.There are 15 tests for 45 students.
A. 
B. 
C. 
D. 
Solve using the elimination method. If the system has no solution or an infinite number of solutions, state this.8x - 2y = -23-8x + 2y = 23
A. (-8, -7) B. Infinite number of solutions C. (-6, 7) D. No solution