Answer:
b⁴ + 16b³ + 28b² - 242b + 780
Step-by-step explanation:
(b+10) (b³+6b²-32b+78)
b⁴ + 6b³ + 10b³ - 32b² + 60b² + 78b - 320b + 780
= b⁴ + 16b³ + 28b² - 242b + 780
7/8
3/10 of 7/8 means 3/10 times 7/8=21/80
1hour=60mins
60 times 21/80=1260/80=15.75
answer is 15.75 mins
Answer:
a and c
Step-by-step explanation:
because i know
$185 = $65+12x
That’s where you start at with