Mary bought a paid of jeans and a sweater. the pair of jeans costs $30 and the sweater costs $35 .if sales tax is 6% ,how much did toby spend in total for the jeans and sweater? explain

$30 + $35 = $65

Assuming tax is on whole sale not each item:
$65 * 0.06 (6%) = $3.90 (6% of $65)

$65 + $3.90 = $68.90 ($65 + 6%)

OR

You could combine both of these steps and just use this working:
$65 * 1.06 (106%) = $68.90 (106% of $65)

The answer would be: b

Ithink the answer is discovery verbs because they are quite similar to the verb 'discovering'