The double-line graph shows temperature highs and lows for a week. 
What day was the temperature the lowest? What was this low temperature?
A. Thursday; 70°F
B. Saturday; 70°F
C. Friday; 69°F
D. Friday; 72°F
Answer: C
Mathematics
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Simplify the rational expression.
A. -3
B. - 
C. 
D. - 
Mathematics
Find the specified minor and cofactor for the matrix A.M12 and A12 if A = 
A. M12 = 38 and A12 = 38 B. M12 = 38 and A12 = - 38 C. M12 = -16 and A12 = - 16 D. M12 = -16 and A12 = 16
Mathematics
Simplify the expression.(
- 3)(
- 5)
A. 
+ 15
B. 
- 8
+ 15
C. -7
+ 15
D. 
- 5
- 3
+ 15
Mathematics
Solve the problem.A store is discounting all regularly priced items by 75%. (i) Find a function f that computes the sale price of an item having a regular price of x. (ii) Find the regular price of an item that costs $84.59 on sale.
A. f(x) = x - 0.75; $85.34 B. f(x) = 0.75x; $112.79 C. f(x) = x - 0.75x; $338.36 D. f(x) = 0.75 + x; $83.84
Mathematics