Question

daily slushie sales
the equation for the line of best fit is ( y = 0.8x + 3 ). according to the equation, which of these statements is true?
on a day when the high temperature is ( 68^{circ}f ), the stand would likely sell about 57 slushies.
on a day when the high temperature is ( 78^{circ}f ), the stand would likely sell about 59 slushies.

Explanation:

Step1: Substitute \(x = 68\) into \(y=0.8x + 3\)

$$y=0.8\times68+3$$
$$y = 54.4+3$$
$$y=57.4\approx57$$

Step2: Substitute \(x = 78\) into \(y = 0.8x+3\)

$$y=0.8\times78 + 3$$
$$y=62.4+3$$

$$y = 65.4\approx65 eq59$$

Answer:

On a day when the high temperature is \(68^{\circ}F\), the stand would likely sell about \(57\) slushies.