Solve the problem.Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take both tests and the results are shown below. Find the equation of the least-squares regression line that models the data.

A. y ? 0.930 - 19.4x
B. y ? 19.4 + 0.930x
C. y ? -0.930 + 19.4x
D. y ? -19.4 - 0.930x


Answer: B

Mathematics

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Solve the problem.The future value of a simple interest investment is given by S = P(1 + rt), where P is the principal invested at a simple interest rate r for t years. What principal P must be invested for  at the simple interest rate  so that the future value grows to $3600.

A. $3503.65 B. $3472.67 C. $127.33 D. $3243.24

Mathematics

Find the mean for the list of numbers.Ages of patients (in years) in a clinic: 18, 4, 25, 18Round answer to the nearest whole number if necessary.

A. 4 year(s) B. 18 years C. 16 years D. 15 years

Mathematics

Evaluate p(k) by dividing p(x) by x - k and determining the remainder.p(x) = 7x4 + 8x3 + 2x2 - 3x + 33, k = -2

A. 129 B. 146 C. 71 D. 95

Mathematics

Solve the formula for the indicated letter. Assume that all variables represent nonnegative numbers.q =   for p

A. = ± 
B. = 
C. = 
D. = ± 

Mathematics