Paul bought a student discount card for the bus. The card allows him to buy daily bus passes for $1.20. After one month, Paul bought 19 passes and spent a total of $28.80. How much did he spend on the student discount card?

sorry

step-by-step explanation:

sorry, but im pretty sure its a now that i look at it

sina-sinb

cosb+cosa

tana-tanb

cos0+cos x pi/3

20tan

step-by-step explanation:

step-by-step explanation:

total income = price of one ticket   *   number of tickets sold

  y                 =     4                                   x

so the equation is y=4x     with x≥0   because number of tickets sold can not be negative

thus the equation is a semi -line with an end point at

(0,0)

passing through :

x=1     y=4(1) = 4   so through (1,4)