Question

I need helping with dis

Answer 1

10.

0.3 r = 2.1

r = 2.1/0.3 = 21/3 = 7

Answer: 7

11.

`8 \textrm{ hours} * \frac{ 5 \textrm{ dollars}}{\textrm{car}} * \frac{ 12 \textrm{ cars}}{3 \textrm{ hours}} = 160 \textrm{ dollars}`

Answer: $160

12.

`\frac{5 \textrm{ dollars}}{\textrm{week}} * w \textrm{ weeks} = 5w`

Answer: 5w