Help me fast! No links pls:D

Find the distance between points (1,5) and (9,2) to the nearest tenth.

A. 73
B. 8.5
C. 8.1
D. 4.1

16.9 times 2.85

step-by-step explanation:

answer: #1 ads up by 8 and i don't know #2

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.

if i'm not wrong, i would say that the third angle has (72) because the three sides of all triangles have 180 degrees and if we subtract 180 - 62 - 40 = (72) / but i'm not sure about 40 yd.