Simplify the expression. Assume that all variables are positive when they appear.

A.
B. 25x
C. x 
D.


Answer: A

Mathematics

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Provide an appropriate response.Students in several classes are asked to rank their choices for days to come to campus to make presentations as a final project. There are three days where a big enough venue is available for each of the classes, Monday (M), Tuesday (T) and Friday (F). The results are shown in the following preference table.Number of Votes 120654015First ChoiceFFTMSecond ChoiceTMFTThird ChoiceMTMF??????a. How many students voted? b. How many students selected the days in the order M, T, F?c. How many students selected Friday as their first choice for a presentation day?d. How many students selected Tuesday as their first choice for a presentation day?

A. a. 240, b. 40, c. 185, d. 15 B. a. 240, b. 15, c. 185, d. 40 C. a. 240, b. 15, c. 65, d. 15 D. a. 240, b. 40, c. 120, d. 40

Mathematics

Translate to a proportion and solve. When necessary, round to the nearest hundredth.What is 3% of 1400?

A. 142 B. 420 C. 42 D. 1420

Mathematics

Sketch the graph of the equation. Identify the vertex and the intercepts.y = x2 - 4x

A. vertex: (- 2, - 4); 
x-intercepts: (0, 0) and (-4, 0); 
y-intercept: none

B. vertex: (- 2, - 4); 
x-intercepts: (0, 0) and (-4, 0); 
y-intercept: (0, 0)

C. vertex: (2, - 4); 
x-intercepts: (0, 0) and (4, 0); 
y-intercept: (0, 0)

D. vertex: (2, - 4); 
x-intercepts: (0, 0) and (4, 0); 
y-intercept: none

Mathematics

Estimate the answer by rounding as indicated.Estimate the product by rounding each factor to the nearest hundred.103 × 299

A. 30,000 B. 300,000 C. 20,000 D. 200,000

Mathematics