Let A and B be sets with cardinal numbers, n(A) = a and n(B) = b, respectively. Decide whether the statement is true or false.n(A ? B) + n(A ? B) = n(A) + n(B)
A. True
B. False
Answer: A
Mathematics
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Write a formula for a linear function f whose graph satisfies the conditions.Slope: 
; y-intercept: -7
A. f(x) = 
x - 7
B. f(x) = - 
x + 7
C. f(x) = - 
x - 7
D. f(x) = 
x + 7
Mathematics
Graph the feasible set of the system of linear inequalities.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A $95,000 mortgage for 30 years at 11% APR requires monthly payments of $904.71. Suppose you decided to make monthly payments of $1,100. How much do you save with the greater payments compared to the original plan?
A. $102,468.40 B. $152,591.75 C. $96,411.50 D. $136,605.60
Mathematics
Prove the identity.1 + sec2x sin2x = sec2x
What will be an ideal response?
Mathematics