$810 because if you use the simple interest formula (s=p*r*t), you get $810 hope this helped!
Answer:
..2.50x + 3.75x = 15..
Step-by-step explanation:
i think
The first one is 63.9 and the second should be 116.1
Answer:
2500 pence (C = 2500)
Step-by-step explanation:

From the given information, t is the number of texts so essentially you will plug in the number of texts provided (150) in the place of the variable t.

Apply the same thing to minutes, plug in the number of minutes (50) in the place of the variable m.

Now multiply the substitutes with the co-efficient.
(10*150=1500 & 20*50=1000)
Add the addends
C = 2500