The cost in dollars, of printing n digital photos is f(n)=1.50+0.20n. Which statement is correct? *

For each additional photo printed, the cost increases by $0.20.
For each additional photo printed, the cost increases by $1.30.
For each additional photo printed, the cost increases by $1.50.
For each additional photo printed, the cost increases by $1.70.

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?

Precalculus question, image attached.

Answer asap evaluate 4-0.25g+0.5h4−0.25g+0.5h when g=10g=10 and h=5h=5.