alexandermoulton2
alexandermoulton2 alexandermoulton2
  • 22-06-2021
  • Mathematics
contestada

a phone company uses the expression 1.25 + 0.10m to calculate the cost of a phone call that lasts m minutes. what is the cost of a call that lasts 20 minutes?

Respuesta :

MrRoyal
MrRoyal MrRoyal
  • 27-06-2021

Answer:

[tex]f(20) =3.25[/tex]

Step-by-step explanation:

Given

[tex]f(m) = 1.25 + 0.10m[/tex]

Required

[tex]f(20)[/tex]

We have: [tex]f(m) = 1.25 + 0.10m[/tex]

Substutute 20 for m

[tex]f(20) =1.25 + 0.10*20[/tex]

[tex]f(20) =1.25 + 2[/tex]

[tex]f(20) =3.25[/tex]

Answer Link

Otras preguntas

state and appearance sodium chloride
7. A battery is used to light a 24 W electric lamp. The battery provides a charge of 120 C in 60 s. TH 24W What is the potential difference across the lamp?
Can someone help me with these problems please!!
Total area= Help me please thanks so much :)
At year-end (December 31), Chan Company estimates its bad debts as 0.80% of its annual credit sales of $831,000. Chan records its Bad Debts Expense for that est
Please help me Given the quadratic function, describe in words the transformations and then provide a sketch of the graph. y = − 1/²(x+4)² - 7
Please help me Given the quadratic function, describe in words the transformations and then provide a sketch of the graph. y = − 1/²(x+4)² - 7
Suppose you have $1500 in your savings account at the end of a certain period of time. You invested $1000 at a 2.71% simple annual interest rate. How long, in y
Select the correct answer from the drop-down menu. The expression is not equivalent to (1 - sin²(x)) tan(-x). J e C ✔
useful and inconvenience of frictional force of a soccor player running with soccer boots