Provide an appropriate response.A student was asked to evaluate 
for 
She started by multiplying by 3 to clear the fraction. Why is this not correct?
What will be an ideal response?
The student is evaluating an expression, not solving an equation. Clearing fractions can only be done when solving an equation. The multiplication on one side of the equation can then be balanced out by an equivalent multiplication on the other side.
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Find the gradient ?f.f(x, y) = 
A. (x2 + y2)-2[y2(y2 - x2)i + 2x2yj] B. (x2 + y2)2[y2(y2 - x2)i + 2x2yj] C. (x2 + y2)-2[2x2yi + y2(y2 - x2)j] D. (x2 + y2) [2x2yi + y2(y2 - x2)j]
The graph of a function is given. Determine whether the function is increasing, decreasing, or constant on the given interval.(2, ?)
A. constant B. increasing C. decreasing
Graph the function.y = 5x + 1 + 3
A. 
B. 
C. 
D. 
Use a calculator to approximate to three decimal places.
A. 15 B. 15.511 C. 15.539 D. 15.524