Question

$\text{A function is given by the equation:}y=2.5x+15$
If its domain is [6, 26], then the range of the function will be

• A. [15, 65]
• B. [15, 80]
• C. [30, 80]
• D. [30, 65]

Answer 1

The correct option is C [30, 80]

$\text{Equation for the function is}:y=2.5x+15$

The domain of the function is given as [6, 26]

When domain, x = 6
$\text{Range will be: y =}2.5\times 6+15=30$

When domain, x = 26
$\text{Range will be: y =}2.5\times 26+15=80$

So the range, or the set consisting of all the outputs of the given function will be [30, 80]