Solve the problem.Walt made an extra $9000 last year from a part-time job. He invested part of the money at 7% and the rest at 10%. He made a total of $750 in interest. How much was invested at 10%?
A. $7000
B. $4000
C. $4500
D. $5000
Answer: B
Mathematics
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Integrate the function f over the given region.f(x, y) = 
over the region bounded by the x-axis, line 
and curve 
A. 5 B. 1 C. 6 D. 7
Mathematics
Use the Trapezoidal Rule with n = 4 steps to estimate the integral.
A. 36
B. 9
C. 
D. 18
Mathematics
Use the coordinates of the indicated points to find the slope of the line.
A. - 
B. 4
C. -4
D. 
Mathematics
Solve the problem.The spinner shown is spun once. Find the probability that the spinner stops on 4. 
A. 
B. 
C. 1
D. 5
Mathematics