Is the function graphed one-to-one?
A. Yes
B. No
Answer: B
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Linear regression always gives a linear function with positive slope.
Answer the following statement true (T) or false (F)
Write the quotient in the standard form.
A. - 
+ 
i
B. - 
- 
i
C. 
+ 
i
D. 
- 
i
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(x5y-1)3
A. 
B. x15y3
C. 
D. 
Translate the problem to a system of equations, then solve using matrices.A croissant, a cup of coffee, and a fruit bowl from Kelley's Coffee Cart cost a total of $5.50, and a croissant costs twice as much as a cup of coffee. Kelley posts a notice announcing that, effective next week, the price of a croissant will go up 15% and the price of coffee will go up 15%. After the increase, the total price of the purchase will be $5.84. Find the cost of each item before the increase.
A. A fruit bowl costs $3.25, a croissant costs $1.73, and a cup of coffee costs $0.86. B. A fruit bowl costs $3.25, a croissant costs $1.50, and a cup of coffee costs $0.75. C. A fruit bowl costs $3.25, a croissant costs $0.86, and a cup of coffee costs $1.73. D. The prices cannot be determined from the given information.