For carolina's birthday her mom took her and four friends to a waterpark. caroline is mom paid $40 for five student tickets what was the price for one student ticket

Will give brainliest series to sigma notation write the following series in sigma notation. 6+10+14+18+22+26+30 example image shown below.

Anyone know? will mark brainliest if correct

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?