123=4 234=8
345=86
426=?
X=?
I think there is a mistake with this question but if there is no mistake could you show me the way of solving it

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

Multiply. write your answer in simplest form. 3/8 x 5/7

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?