Solve by substitution and check.x + y = 9 y = 2x + 3
A. (7, 2)
B. (2, 7)
C. (3, 6)
D. (1, 9)
Answer: B
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Convert the given interest rate to decimal form if it is given as a percentage, and to a percentage if it is given in decimal form.0.05% to decimal
A. 0.5 B. 5.0 C. 0.05 D. 0.0005
Use front end rounding to estimate the answer. Then use your estimate to select the correct exact answer.4182.061 - 35.7642
A. 414.62968 B. 4146.2968 C. 41.462968
Solve the equation using the quadratic formula.14x2 + 15x = 0
A. 
, 0
B. 0
C. - 
D. ± 
The ? shape in the figure below is shown using 9 pixels in a 3 × 3 grid. The color levels are given to the right of the figure. Use the matrix 
that represents a digital photograph of the ? shape to solve the problem.
Using the same color levels from the instructions, write a 3 × 3 matrix A that represents the letter L in dark grey on a white background. Then find a 3 × 3 matrix B so that A + B lightens only the letter L from dark grey to light grey.
A.
A = 
; B = 
B.
A = 
; B = 
C.
A = 
; B = 
D.
A = 
; B = 