Multiply and simplify. Assume that all variables represent positive real numbers.(6
- 6)2
A. 216 - 72
B. 288 + 72
C. 288 - 72
D. 246 - 72
Answer: C
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Verify the identity.cos 
= -sin x
What will be an ideal response?
Estimate. Then find the actual sum7.123 + 16.80
A. Estimate: 24; Actual: 23.203 B. Estimate: 24; Actual: 23.923 C. Estimate: 23; Actual: 23.923 D. Estimate: 23; Actual: 23.203
Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 
A. x-intercept: (7, 0) , y-intercept: 
;
B. x-intercept: (0, 0) , y-intercept: (0, 0) ;
C. x-intercept: (-3, 0) , y-intercept: 
;
D. x-intercept: (3, 0) , y-intercept: 
;
Find the area of the triangle by using Heron's formula. Round the answer to the nearest tenth. All sides are measured in inches.a = 151, b = 165, c = 174
A. 14,296.5 sq in. B. 17,155.8 sq in. C. 730.7 sq in. D. 11,437.2 sq in.