Find the product.(x + 4y)(3x - 7y)
A. x2 + 5xy - 28y2
B. x2 + 5xy + 5y2
C. 3x2 + 5xy + 5y2
D. 3x2 + 5xy - 28y2
Answer: D
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Solve the initial value problem.v'(t) + 
= 6, v(-1) = 0
A. v = -12(et/2 + 1/2 + 12) B. v = -12e-t/2 - 1/2 + e1/2 C. v = -12(e-t/2 - 1/2 - 1) D. v = 3e-t/2 - 1/2 + 3
Solve the problem. Round your answer to the nearest tenth unless indicated otherwise.Runners in a 26 km race run how many miles?
A. 27.6 mi B. 41.9 mi C. 13.0 mi D. 16.1 mi
Multiply.
A. 279 B. 278 C. 288 D. 388
Find a matrix A and a column matrix B that describe the following tables involving credits and tuition costs. Find the matrix product AB, and interpret the significance of the entries of this product.
?
A. AB = 
Tuition for Student 2 is $1083 and tuition for Student 1 is $881.
B. AB = 
Tuition for Student 1 is $1083 and tuition for Student 2 is $881.
C. AB = 
Tuition for Student 1 is $1068 and tuition for Student 2 is $864.
D. AB = 
Tuition for Student 2 is $1068 and tuition for Student 1 is $864.