4. Given B = 2 1 1 3 2 1
2 1 2

(a) Find the determinant, minor, cofactor and adjoint of matrix B.

(b) Find B-'. Hence solve the following simultaneous equations. 2x + y + 2 = 20 3x +2y + = = 14 2x + y +2= =12​

Samantha is growing a garden in her back yard. she spend $90 setting up the garden bed and buying the proper garden supplies. in addition, each seed she plants cost $0.25. a. write the function f(x) that represents samantha's total cost on her garden. b. explain what x represents. c. explain what f(x) represents. d. if samantha plants 55 seeds, how much did she spend in total?

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

The cost for an uberi is $2.50 plus $2.00 mile. if the total for the uber ride was $32.50, how many miles did the customer travel?