Question

an online sellers rating went down by 2.5. now the sellers rating is 2.98.
(a) let r be the sellers rating before it went down. write an equation that can be used to find r. first choose an appropriate form. then fill in the blanks with the letter r and the numbers 2.5 and 2.98.
$square+square=square$
$square-square=square$
$square \times \square=\square$
$square \div \square=\square$
(b) solve your equation for r to find the sellers rating before it went down.
$square$

Explanation:

Step1: Select equation form

The rating decreased, so use subtraction: $r - 2.5 = 2.98$

Step2: Isolate $r$ by adding 2.5

$r = 2.98 + 2.5$

Step3: Calculate the sum

$r = 5.48$

Answer:

(a) $\boldsymbol{r - 2.5 = 2.98}$ (select the $\boldsymbol{\square - \square = \square}$ form and fill in the values)
(b) $\boldsymbol{5.48}$