Solve the problem.
-A video rental company charges $\$ 4$ per day for renting a video tape, and then $\$ 3$ per day after the first. Use the greatest integer function and write an expression for renting a video tape for $x$ days.
A) $y = 3 x + 4$

B)y = $3[[x-1]]+4$

C) y+4 = $3[[x]]$

D) $\mathrm { y } = \llbracket 3 \mathrm { x } + 4 \rrbracket$

Question

Solve the problem.
-A video rental company charges $\$ 4$ per day for renting a video tape, and then $\$ 3$ per day after the first. Use the greatest integer function and write an expression for renting a video tape for $x$ days.
A) $y = 3 x + 4$

B)y = $3[[x-1]]+4$

C) y+4 =  $3[[x]]$

D) $\mathrm { y } = \llbracket 3 \mathrm { x } + 4 \rrbracket$

Quizplus · Accepted Answer

The correct expression is $y = 3(x-1) + 4$, where $3(x-1)$ accounts for the cost after the first day at $3 per day, and the +4 accounts for the initial day's cost. The greatest integer function, denoted by double brackets, is not needed here, as the problem does not specify rounding down to the nearest integer.

Solve the Problem $4\$ 4$4 Per Day for Renting a Video Tape, and Then

Solve the Problem $\$ 4$ Per Day for Renting a Video Tape, and Then