Elena and her friends have a half-day at school,so they plan to spend the afternoon paddleboarding at lake evergreen.They want to spend the rest of the day on the water,but it starts to rain after paddleboarding for only 3/4 of an hour!. Elena is disappointed when she realizes the sun doesn’t go dornajo for another 3 1/2 hours.

Use an equation to find the amount of time Elena planed paddleboarding.