Solve the problem.A tour group split into two groups when waiting in line for food at a fast food counter. The first group bought 7 slices of pizza and 4 soft drinks for $29.34. The second group bought 5 slices of pizza and 5 soft drinks for $23.85. How much does one slice of pizza cost?
A. $3.42 per slice of pizza
B. $2.92 per slice of pizza
C. $1.85 per slice of pizza
D. $1.35 per slice of pizza
Answer: A
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Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation. 2x - y - 5z = -20 3x + 7y - 8z = -7-9x - 3y + z = -40
A. {(4, 5, 3)} B. ? C. {(-4, 3, 8)} D. {(4, 3, 5)}
Find the standard-form equation for an ellipse which satisfies the given conditions.An ellipse with foci at (4, -1) and (4, -7); major axis length of 10
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve the formula for the specified variable.
- 
+ 
= 1 for x
A. y = 
B. z = 
C. x = 
D. x = 
Information is given about a polynomial f(x) whose coefficients are real numbers. Find the remaining zeros of f.Degree 4; zeros: i, 1 + i
A. -i, 1 - i B. -1 + i, 1 - i C. -i, -1 + i D. 1 - i