1. Determine whether the system is consistent, inconsistent, or dependent.
3x + 2y = 15
6x + 4y = 30 (Points : 1)
Consistent
Dependent
Inconsistent
2. Carla invested $23,000, part at 16% and part at 15%. If the total interest at the end of the year is $3,500, how much did she invest at 16%?
$4,000
$18,000
$6,000
$5,000
3. Find the coordinates of the x-intercept.
2x + y = -6
(-6, 0)
(0, -3)
(0, -6)
(-3, 0)
4. Determine whether the system is consistent, inconsistent, or dependent.
3x - 3y = -9
9x - 9y = -27
Consistent
Dependent
Inconsistant
5. The amount of revenue a company makes per day by selling x items is given by the function f(x) = 14x - 0.2x2. How many items should be sold if the company wants to maximize their profit?
30 items
35 items
70 items
40 items
6. Find the domain and range of the relation, and state whether or not the relation is a function.
{(7, 2), (8, 2), (9, 2), (10, 2)}
Domain = {2}, Range = {7, 8, 9, 10}
The relation is not a function.
Domain = {2}, Range = {7, 8, 9, 10}
The relation is a function.
Domain = {7, 8, 9, 10}, Range = {2}
The relation is not a function.
Domain = {7, 8, 9, 10}, Range = {2}
The relation is a function.
7. Write the equation in the slope-intercept form.
4x - 10y = 11
y = 2/5x - 11
y = -2/5x + 11/10
y = -2/5x + 11
y = 2/5x - 11/10