Membership in a science club is expected to grow by about 6% per month. currently there are 140 members in the club. in about how many months will membership reach 300 members?

Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250

Me. i can't figure out this question. give an explanation too. .

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2