Solve the problem.A right triangle has one vertex on the graph of y = x2 at (x, y), another at the origin, and the third on the (positive) y-axis at (0, y). Express the area A of the triangle as a function of x.
What will be an ideal response?
A(x) = 
x3
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Determine whether the function is one-to-one by graphing and using the horizontal line test.f(x) = 
- 5
A. Yes B. No
Solve the system of four equations in four unknowns using matrices.9w + 8x - 5y - 4z = 198w + 6x - 8y - 4z = -29w - 8x + 6y + 5z = -35-5w - 4x + 8y + 9z = -1
A. (1, 5, 4, 2) B. (-1, 5, 4, -2) C. (-1, 4, -5, 2) D. ?
Perform the indicated operation.Subtract (28x + 11) from (-8x2 - 14x + 11).
A. -8x2 - 42x - 22 B. 8x2 + 42x C. -8x2 + 14x + 22 D. -8x2 - 42x
Write and solve an equation to find the percent increase or decrease. Round your answer to the nearest tenth of a percent, if necessary.All 34 of the students in a mathematics class attended class on Monday. On Tuesday only 22 students attended. What was the percent of decrease?
A. 54.5% B. 35.3% C. 64.7% D. 45.5%