Please help me simplify these again ( 3 ; 4 ; 5 )
thank u ​

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?