Solve the problem.Roberto invested some money at 8%, and then invested $3000 more than twice this amount at 10%. His total annual income from the two investments was $3660. How much was invested at 10%?
A. $2700
B. $24,000
C. $9000
D. $27,000
Answer: D
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Simplify the given expression. Expansion of any term is not necessary; proper recognition of the form of the expression leads to the proper result.4 sin 2x cos 2x
A. 
sin 16x
B. cos 4x
C. cos 8x
D. 2 sin 4x
Given that the x- and y-coordinates of a moving particle are given by the indicated parametric equations, find the magnitude and direction of the acceleration for the specific value of t.x = 
, y = 
, t = 2
A. 0; 123.1° B. 0.01; 303.1° C. 0.01; 123.1° D. 0; 303.1°
Find an equivalent equation in rectangular coordinates.r(1 - 2 cos ?) = 1
A. x2 + y2 = 2 + x
B. x2 + y2 = 1 + 2x
C. 
= 1 + 2x
D. 
= 2 + x
For each data set shown by the table, a. Create a scatter plot for the data.b. Use the scatter plot to determine whether an exponential function, a logarithmic function, or a linear function is the best choice for modeling the data.Percentage of Population Living in the South Suburbs of a Large City
What will be an ideal response?