Solve the problem.A square wave is built up from sinusoidal curves of varying periods and amplitudes. Graph the following function, which can be used to approximate the square wave.f(x) = 
0 ? x ? 4 
A better approximation to the square wave is given by f(x) = 
src="https://sciemce.com/media/4/ppg__tttt0529191135__f1q18g5.jpg" alt="" style="vertical-align: -17.0px;" />0 ? x ? 4 
Graph this function and compare the result to the previous graph. Adding another term will improve the approximation even more. Write this new function with four terms.
What will be an ideal response?
?
f(x) = 
Mathematics
src="https://sciemce.com/media/4/ppg__tttt0529191135__f1q18g5.jpg" alt="" style="vertical-align: -17.0px;" />0 ? x ? 4 Graph this function and compare the result to the previous graph. Adding another term will improve the approximation even more. Write this new function with four terms.
What will be an ideal response?
| ? | |
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Simplify the algebraic expression by removing parentheses and combining similar terms.5(-x - 1) - 3(5x + 1) - 4(x + 3)
A. –24x - 20 B. –22x - 20 C. –22x - 16 D. 22x + 20 E. –24x - 16
Solve the problem.Find the area of the sector having radius 13.5 meters and a central angle 
. Round to one decimal place.
A. 4.5 m2 B. 1.5 m2 C. 61.3 m2 D. 122.7 m2
Find the coordinates of the vertex of the parabola.y = 3x2 + 12x + 13
A. (2, -1) B. (-1, 2) C. (-2, 1) D. (1, -2)
Find the square root.
A. 1
B. 
C. 6
D. 3