You want to buy a new app for your iPhone that costs $2.50. The tax rate is 4%. How much total do you pay for the app?

9514 1404 393

  $2.60

Step-by-step explanation:

You pay ...

  app cost + tax

  $2.50 + 4% × $2.50 = $2.50×(1 + 4%) = 1.04×$2.50 = $2.60

You pay $2.60 for the app.

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

the correct answer is 5 6 and 7