Question

What is the value of 1/3x to the second power + 5.2y when x = 3 and y = 2?

12.4
13.4
14.4
16.4

Answer 1

You mean this problem?

Evaluate \(\dfrac{1}{3}x^2 + 5.2y \) for \(x = 3\) and \(y = 2\).

Answer 2

The first step is to write the expression with x replaced by 3 and y replaced by 2.

\(\dfrac{1}{3}x^2 + 5.2y =\)

\( =\dfrac{1}{3}(3^2) + 5.2(2)\)

Can you evaluate that expression?
Remember PEMDAS, the order of operations.

Answer 3

\(\dfrac{1}{3} \times 3^2 + 5.2 \times 2\)

\( = \dfrac{1}{3} \times 9 + 10.4\)

\(= 3 + 10.4\)

\(= 13.4\)