Solve the problem.The grocery expenses for six families were 
, 
, 
, 
, 
, and 
. Compute the mean grocery bill. Round
your answer to the nearest cent.
A. $70.13
B. $68.44
C. $102.67
D. $82.13
Answer: B
Mathematics
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Solve using the quadratic formula.x2 + x + 9 = 0
A. 
B. 
C. 
D. 
Mathematics
Solve.A car travels 400 miles on level terrain in the same amount of time it travels 160 miles on mountainous terrain. If the rate of the car is 30 miles per hour less in the mountains than on level ground, find its rate in the mountains.
A. 80 mph B. 40 mph C. 20 mph D. 50 mph
Mathematics
Perform the row operation(s) on the given augmented matrix.R2 = -2r2 + r1
A. 
B. 
C. 
D. 
Mathematics
Find an equation of the parabola whose graph is shown.
 figure 1.png)
a x² = 4y
b. x² = 16y
c. y² = 16x
d. y² = 8x
e. none of these
Mathematics