Answer:
$195
Explanation:
To get 30% of $150, we need to multiply 30 by 150 and divide the answer by 100.
=

Simplifying this, we get 30% of $150 is $45.
Since Shelly needs to increase the amount, we add $45 to $150.
45 + 150 = 195
Shelly needs to budget $195 total for school books.