Find a85 of the sequence 4,9,14,19,

424

Step-by-step explanation:

Since the difference between consecutive terms are constant, that is

19 - 14 = 14 - 9 = 9 - 4 = 5 ← common difference (d)

Then these are the terms of an arithmetic sequence with n th term

= a₁ + (n - 1)d

where a₁ is the first term = 4 and d the common difference, hence

= 4 + (84 × 5) = 4 + 420 = 424

The regular bottle holds 303 fl oz of sunscreen.

Step-by-step explanation:

to find out what 75% of 1212 is, multiply 1212 by .75.

1212 x .75 = 909

Since the regular size bottle is 75% LESS than the family size, subtract 909 fl oz from 1212 fl oz.

1212 - 909 = 303.