Use the echelon method to solve the system of two equations in two unknowns.-7x + 30 = 9y 3x + 6y = 15
A. (2, 2)
B. (3, 2)
C. (3, 1)
D. No solution
Answer: C
Mathematics
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Determine whether the graph is that of a function.
A. function B. not a function
Mathematics
Solve the problem.There is a formula that gives a correspondence between women's shoe sizes in the United States and those in Italy. The formula is 
where S is the size in Italy and x is the size in the United States. What would be the US size for an Italian size of 32?
A. size 76 B. size 4 C. size 2 D. size 8
Mathematics
Solve the equation.s = 32 + 4
A. {32} B. {48} C. {128} D. {64}
Mathematics
Evaluate the function.
For the function y = f(x) described by the table, find f(2).
A. 2 B. 7 C. 0 D. Not shown
Mathematics