Write an equation to represent the situation. Then, solve the equation.Four times the difference of a number and 1 is equal to 10 less than twice the number. Find the number.
A. 4x - 1 = 2x - 10; - 
B. 4(x - 1) = 2x - 10; -4
C. 4(x - 1) = 2x - 10; -3
D. 4x - 1 = 2x - 10; - 
Answer: C
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Use exponential regression to provide an approximate model for the following data. t 1.23 4.94 8.67 12.01 15.48 y 4.20 15.08 68.05 260.75 1064.52?
A. ?
B. 
C. ?
D. ?
Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.5 + 30 + 180 + ... + 5 ? 6n-1 + ...
A. 
; 
B. 
; series diverges
C. 
; 1
D. 
; series diverges
Solve using the quadratic formula. Use a calculator to approximate the solution to three decimal places.
x2 - x + 
= 0
A. 2.5 B. -0.303, 3.303 C. 0.5, 2.5 D. 0.382, 2.618
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 1 is $1293, tuition for Student 2 is $1243, and tuition for Student 3 is $982.
B.
AB = 
College A costs $937 and College B costs $1140.
C.
AB =
Tuition for Student 1 is $1303, tuition for Student 2 is $1273, and tuition for Student 3 is $987.
D.
AB = 
College A costs $892 and College B costs $1026.