Graph using the slope and the y-intercept.-5x + 45 ? f(x) = 20
A. 
B. 
C. 
D. 
Answer: D
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Find the required quantity given the wire that lies along the curve r and has density ?.Moment of inertia Iz about the z-axis, where r(t) = (3 sin 2t)i + (3 cos 2t)j + e6tk, 0 ? t ? 1; 
A. Iz = 
(e12 - 1)
B. Iz = 
C. Iz = 
[(36 + 36e12)3/2 - (36 + 36)3/2 ]
D. Iz = 
Solve the problem.Walt made an extra $9000 last year from a part-time job. He invested part of the money at 7% and the rest at 10%. He made a total of $750 in interest. How much was invested at 10%?
A. $7000 B. $4000 C. $4500 D. $5000
Solve the problem.If a boat uses 15 gallons of gas to go 68 miles, how many miles can the boat travel on 60 gallons of gas?
A. 17 miles B. 272 miles C. 544 miles D. 292 miles
Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 