Write an explicit rule to represent the sequence : 4, 10, 16,

It's an arithmetic sequence:

The explicit rule:

Substitute:

so first lets findout how much she spent so whats 32.00 - x = 9.20

32.00 - 22.75 =9.25. so she spent a total of $22.75 okay now we know the amount she spent. so now u got it from here.