Write the sentence with the fraction as a percent. If necessary, round the percentage to the nearest tenth.Bob's rent is 
of his income.
A. Bob's rent is 60% of his income.
B. Bob's rent is 75% of his income.
C. Bob's rent is 65% of his income.
D. Bob's rent is 70% of his income.
Answer: C
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A building in the shape of a rectangular box is to have a volume of 
(see the figure). It is estimated that the annual heating and cooling costs will be $2/square foot for the top, $4/square foot for the front and back, and $2/square foot for the sides. Find the dimensions of the building that will result in a minimal annual heating and cooling cost. What is the minimal annual heating and cooling cost(C)?
?
?
A. 
B. ?
C. ?
D. ?
Graph the equation using the slope and y-intercept.4x + 2y = 8
A. 
B. 
C. 
D. 
Solve the problem.The table below lists women's and men's total enrollments at all institutions of higher learning in Country X for various years. College Enrollments (Millions)YearWomenMen19886.35.919907.46.519948.16.820028.97.120069.27.4The enrollments (in millions) of women and men, respectively, can be modeled by the systemW = 0.14t + 5.69M = 0.07t + 5.62where t is the number of years since 1980.(i) Use "intersect" on a graphing calculator to estimate when women's and men's enrollments were approximately equal. What was that enrollment?(ii) Use the models to predict the total enrollment of women and men in 2011.
A. (i) Intersect at approximately (-2.20, 5.98). This means that in 1978, women's and men's enrollment was about 6.0 million students. (ii) Not enough information has been provided. B. (i) Intersect at approximately (-1.00, 5.55). This means that in 1979, women's and men's enrollment was about 5.6 million students. (ii) In 2011, W = 10.03 million students and M = 7.79 million students. C. (i) Intersect at approximately (-1.11, 6.32). This means that in 1979, women's and men's enrollment was about 6.3 million students. (ii) In 2011, so W = 10.31 million students and M = 7.93 million students. D. (i) The functions do not intersect. (ii) In 2011, W = 9.47 million students and M = 7.51 million students.
Find the value for the function.Find f(-x) when f(x) = 3x2 + 4x - 5.
A. 3x2 - 4x + 5 B. 3x2 - 4x - 5 C. -3x2 - 4x + 5 D. -3x2 - 4x - 5