My monthly cell phone bill is $40 plus $.10 for each text message. write an equation to show the cost of texting. what is my total monthly bill if i send 80 text messages

y=.1x+40; Your total monthly bill is $48 for 80 text messages.

Step-by-step explanation:

y is your total bill

x represents each text message

40 is you cellphone bill cost

.1 is the cost per text message

(y=.1x+40 becomes your equation)

plug 80 to represent "x"

y=.1*80+40 --->  y=48

your total monthly bill is $48

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

hdjd

step-by-step explanation: