Solve the problem.Roberto invested some money at 8%, and then invested $5000 more than twice this amount at 12%. His total annual income from the two investments was $4760. How much was invested at 12%?
A. $3100
B. $31,000
C. $15,000
D. $26,000
Answer: B
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Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.6
A. x12
B.
C.
D. x36
Find the zeros of the function. Give approximate solutions rounded to three decimal places when necessary.f(x) = 3x2 - x + 5
A. 0.167 ± 1.28 B. 0.167 ± 1.28i C. 0.167 ± 2.56 D. 0.167 ± 2.56i
Simplify the expression. ? - 9 - ( 10 - 4 ) ?
A. - 15 B. 15 C. - 23 D. - 3 E. 23
Solve the problem.Determine the resultant effect of three people pulling on a car as shown in the drawing. a = 75.0 lb, b = 77.0 lb, c = 52.0 lb, d = 32°, e = 22° Round results to an appropriate number of significant digits.
A. = 198 lb, ? = 17°
B. = 95 lb, ? = 12°
C. = 190 lb, ? = 6°
D. = 110 lb, ? = 33°