Solve the problem.A new homeowner has a triangular-shaped back yard. Two of the three sides measure 65 ft and 80 ft and form an included angle of 125°. The owner wants to approximate the area of the yard, so that he can determine the amount of fertilizer and grass seed to be purchased. Find the area of the yard rounded to the nearest square foot.
A. 2129 sq. ft
B. 5200 sq. ft
C. 4260 sq. ft
D. 2130 sq. ft
Answer: D
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Add the polynomials. Express your answer in standard form.(7x2 - 8x - 4) + (6x2 - 8x + 7)
A. 42x2 - 8x + 3 B. 13x4 - 16x2 + 3 C. 13x2 - 16x + 3 D. 13x2 - 8x + 3
Solve the problem.Martha can rake the leaves in her yard in 5 hours. Her brother can do the job in 4 hours. How long will it take them to do the job working together?
A. 
hr
B. 
hr
C. 20 hr
D. 
hr
Use the table to solve the problem. Round to the nearest cent.
Nora Oretega's savings account has a balance of $947. After 9 years, what will the amount of interest be at 6% compounded semiannually?
A. $656.20 B. $670.20 C. $665.20 D. $568.20
Convert to rectangular coordinates.(-8, 180°)
A. (-8, 0) B. (0, 8) C. (0, -8) D. (8, 0)