9) christina's phone company charges a $20 service fee plus $0.20 a minute. if christina's
bill was for no more than $30.60, how many minutes was christina charged for?
solve:
equation:
or
inequality

53 minutes

Step by step explanation:

The statement “no more than” means less than or equal to. .20 per minute can be written as .20x, x standing for the unknown amount of minutes.

So you would write is as:

.20x+20 {less than or equal to sign} 30.60, then you would solve by taking away 20 from each side giving you .20x{less than it equal to} 10.60 then divide each side by .20

Giving you the ending result of:

X { less than it equal to} 53

So Christian was charged for 53 minutes and this makes it an inequality.

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation:

its an acute right triangle

step-by-step explanation: