vega family has a 3-year cell phone contract. javier vega says that the family gets a total of 3 x 10^4 minutes of talk time to share during the 3 yearsis javier correct? if yes, write an expression to show how javier could have found his answer if no, explain why javier is incorrect write the correct number of minutes as the product of a whole number and a power of 10 show your work
the number is 39.
set up an equation in x where x is the required number:
x + 142 = 3x + 64
142 - 64 = 3x - x
2x = 78
x = 39.
these are the correct positions
the correct answer is $81.28
in order to find this, we simply treat the word of as a multiplication symbol.
0.8% of 125% of $8128
now change the percentages to decimals
0.008 * 1.25 * 8128 = 81.28