Clear fractions then solve by substitution.
x + 
y = 4 x - y = 2
A. {(4, 4)}
B. ?
C. {(5, 3)}
D. {(-5, 4)}
Answer: C
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Solve.The square garden in the figure measures x yards on each side. The garden is to be expanded so that one side (the top of the figure) is increased by 3 yards and the adjacent side (the right side of the figure) is increased by 2 yards. Write a polynomial in descending powers of x that expresses the area of the larger garden. Then use the polynomial to determine the area of the larger garden if the original garden measures 5 yards on a side. 
2 yards
A. x2 + 5x + 6; 30 square yards B. x2 + 5; 30 square yards C. x2 + 5; 56 square yards D. x2 + 5x + 6; 56 square yards
Solve the problem.This chart shows the number of meals served in a restaurant during each of the past 4 months. Write the information in the chart as a set of ordered pairs.
A. {(2000, January), (2057, February), (2041, March), (2062, April)} B. {(January, 2000), (February, 2000), (March, 2000), (April, 2000)} C. {(January, 2000), (February, 2057), (March, 2041), (April, 2062)} D. {(2000, January), (2057, January), (2041, January), (2062, January)}
Use Descartes' Rule of Signs and the Rational Zeros Theorem to find all the real zeros of the polynomial function. Use the zeros to factor f over the real numbers. f(x) = 5x4 - 40x3 + 81x2 - 8x + 16
A. -4, 4; f(x) = (x - 4)(x + 4)(5x2 + 1) B. -4, multiplicity 2; f(x) = (x + 4)2(5x2 + 1) C. 4, multiplicity 2; f(x) = (x - 4)2(5x2 + 1) D. no real roots; f(x) = (x2 + 16)(5x2 + 1)
Give the coefficient and degree of the term.5x5y2z2
A. 5, 9 B. 5, degree undefined C. 5, 5 D. 5, 10