Jack is selling tickets to an event. attendees can either buy a general admission ticket or a vip ticket. the general admission tickets are $60 in the vip tickets are $90. he doesn't know how many of each type he has sold, but he knows he sold a total of 29 tickets and made $2100.

Jack sold 17 admission tickets and 12 vip tickets.

Step-by-step explanation:

1. Let´s name the variables as:

x=number of admission tickets

y=number of vip tickets

2. As the problem says Jack sold a total of 29 tickets, it can be expressed as:

(Eq.1)

3. As the general admission tickets are $60, the vip tickets are $90 and he made $2100, it can be expressed as:

(Eq.2)

4. Solve for x on the Eq.1:

(Eq.3)

5. Replace Eq.3 in Eq.2:

6. Replace the value of y in Eq.3:

Therefore Jack sold 17 admission tickets and 12 vip tickets.

answer: 25.4 units

step-by-step explanation: radius = 12.7 units

diameter = twice the radius

diameter = 12.7 x 2

= 25.4