Use a calculator to find ? to the nearest tenth of a degree, if 
and
?
with ? in QIII
?
__________
Fill in the blank(s) with the appropriate word(s).
197.9
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Simplify using the zero-power rule.-100
A. 0 B. 10 C. 1 D. -1
Solve the problem.Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the average number of hours Bill spent exercising per week. Round your answer to two decimal places. 
A. 8.70 B. 8.22 C. 7.78 D. 8.45
Solve the system of equations by elimination.3x - 5y = -126x + 8y = -24
A. (4, 0) B. (-4, 0) C. (0, -4) D. (0, 4)
In 1950 the number of retirees was approximately 150 per thousand people aged 20-64. In 1990 this number rose to approximately 200, and it is projected to rise to 275 in 2020. Model N as a piecewise linear function of the time t in years since 1950, and use your model to project the number of retires per thousand people aged 20-64 in 1998. (Round you answer to the nearest integer.) ?
A. 220 people per thousand B. 154 people per thousand C. 198 people per thousand D. 264 people per thousand E. 286 people per thousand