Answer:
<h3>
![\bold{a_n=6n-3}\\\\\bold{a_{50}=297}](https://tex.z-dn.net/?f=%5Cbold%7Ba_n%3D6n-3%7D%5C%5C%5C%5C%5Cbold%7Ba_%7B50%7D%3D297%7D)
</h3>
Step-by-step explanation:
3, 9, 15, 21, ...
9-3 = 6; 15-9 = 6; 21-15 = 6 ⇒ d = 6
first term: a = 3
difference: d = 6
so the formula:
and:
![a_{50}=6\cdot50-3=300-3=297](https://tex.z-dn.net/?f=a_%7B50%7D%3D6%5Ccdot50-3%3D300-3%3D297)
20%of £800 is 800÷5 =160
800 + 160 =960
Answer:
b
Step-by-step explanation:
100
3:4
6:8
9:12
if u either multiply or divide a number from one side, u must do the same calculation to the other side. hope that helps :)