Billy saved $11 each day and Abi saved $*j* more than Billy each day. After 4 weeks, they were still short of $29 to buy a hard drive.

- How much did the hard drive cost? Express your answer in terms of
*j*. - If
*j*= $3, how much did the hard drive cost?

3 m

- How much did the hard drive cost? Express your answer in terms of
*j*. - If
*j*= $3, how much did the hard drive cost?

(3 m)

- How much did the hard drive cost? Express your answer in terms of
*j*. - If
*j*= $3, how much did the hard drive cost?

(3 m)

- How much did the hard drive cost? Express your answer in terms of
*j*. - If
*j*= $3, how much did the hard drive cost?