Last night Vivian spent 90 minutes doing homework,2/3 hour reading, and 480 seconds fixing her lunch. How many more minutes did she spend doing her homework than she did reading and making her lunch

42 minutes

Step-by-step explanation:

We make sure all units are consistent before we make subtractions.

She spent 2/3 hours reading. 1 hour is 60 minutes, 2/3 hours reading = 2/3 * 60 = 40 minutes

She spent 480 seconds fixing lunch. 1 minute = 60 seconds, 480 seconds = 480/60 = 8 minutes

Hence, she spent 8 minutes fixing lunch and 40 minutes reading.

The number of minutes she spent doing her homework more than sleeping and reading is 90 - 40 - 8 = 42 minutes

step-by-step explanation:

answers available in this download

(pearson%2c%25202012)%2520bbs.pdf& usg=aovvaw1obmtxnfghfgxhx0urh_je

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.