Write the decimal as a percent.7
A. 0.07%
B. 0.7%
C. 350%
D. 700%
Answer: D
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Solve the problem.The median weekly incomes of full-time female workers for various age groups are listed in the table below. Let W(a) represent the median weekly income (in dollars) of women at age a years. Here is the quadratic regression equation for W: W(a) = -0.30a2 + 27.61a - 97.01Use this model to estimate the median weekly income of women at age 20.
A. $335 B. $320 C. $328 D. $315
Solve the problem.Bob works for Allies Electronics making switches. He is paid $0.40 per switch. Last week he made 777 switches on regular time and 114 switches during overtime. Find his gross earnings for the week if time-and-a-half per switch is paid for overtime.
A. $379.20 B. $390.60 C. $367.80 D. $356.40
Use the quadratic formula to solve the equation.x2 + 10x + 41 = 0
A. -9, -1 B. -5 - 16i, -5 + 16i C. -5 - 4i, -5 + 4i D. -5 + 4i
Use a proportion to solve the problem.In baseball, the average number of earned runs given up by a pitcher in 9 innings is the pitcher's earned run average, ERA. For example, if a player gave up 90 earned runs in 250 innings during one year, his ERA is found by solving the proportion Find the ERA for a player who, in one year, gave up 97 earned runs in 223
innings. Round your answer to the nearest hundredth.
A. 20.72 B. 10.78 C. 2.30 D. 3.91