The cost to buy 8 roses in a vase is $32. The cost of a dozen vased roses is $42. If the function relationship between the number of roses and total cost is linear, what is the cost for the vase?
$8
$10
$12
$14
2. Multiple Choice
30 seconds
1 pt
The number of positive even factors of 18 is ___
0
1
2
3
3. Multiple Choice
1 minute
1 pt
Write an exponential function whose graph passes through the points (0, -3) and (4, -48).
y = -3 • (1/2)x
y = -3 • (2)x
y = -3 • (4)x
y = -3 • (16)x
4. Multiple Choice
1 minute
1 pt
Factor 27x3 + y3
(3x + y)(3x + y) (3x + y)
(3x + y) (9x2 - 3xy + y2)
(3x + y) (9x2 + 3xy + y2)
(3x + y) (9x2 - 9xy + y2)
5. Multiple Choice
30 seconds
1 pt
Born in Somerset, Indiana, Derrick Norman Lehmer received many honors for his mathematical work in the study of _________
polynomials
topology
number theory
computer programming
6. Multiple Choice
1 minute
1 pt
The x-intercept of the graph defined by y = 5/2 x - 1 is ______.
-1
2/5
1
5/2
7. Multiple Choice
1 minute
1 pt
Find f (2x – 5) if f (x) = -3x – 4.
-6x + 11
2x - 9
2x - 19
-6x + 19
8. Multiple Choice
30 seconds
1 pt
Suppose you deposit $1000 in an account paying 4% annual interest, compounded continuously. Use A = Pert to find the balance after 10 years.
$1491.82
$1640.71
$1724.38
$1815.43
9. Multiple Choice
1 minute
1 pt
Solve x4 = 2x3 -24x2 = 0
x = -4, 0, 6
x = 0, 4, 6
x = -6, -4, 0
x = -6, 0, 4
10. Multiple Choice
30 seconds
1 pt
Born in Evansville, Indiana, Cora Barbara Hennel was one of the founding members of which mathematics club for faculty and students?