Answer:
50
Step-by-step explanation:
because 89-49=49 49 rouded to the nearest ten is 50
the probability of selecting a 3 is 1/10
16b4=9
(4b²+3) (4b²-3)
16b4-12b²+12b²-9
16b(raised to power 4)-9
16b4-9
collect like terms
(31)(7.29)(4)
=903.96