Acell phone carrier has a family plan rate as follows: the first two phones cost a total of $100. each additional phone cost an additional $10.this can be represented as c(i)=100+10 (i-2)what does c(5) represent?

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

The two cylinders are similar. if the ratio of their surface areas is 9/1.44 find the volume of each cylinder. round your answer to the nearest hundredth. a. small cylinder: 152.00 m3 large cylinder: 950.02 m3 b. small cylinder: 972.14 m3 large cylinder: 12,924.24 m3 c. small cylinder: 851.22 m3 large cylinder: 13,300.25 m3 d. small cylinder: 682.95 m3 large cylinder: 13,539.68 m3