I need help asap.

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

Richard save $32 in march he saved $48 in april and $38 in may then richard spent $113 on a keyboard how much money does richard have left

Eden has a part time job. she is paid ? 7.20 an hour the week she worked 18 and a half hours how much is she paid