Weighted Averages
Matt was babysitting for friend's parents
Saturday morning and was paid an $10
per hour for 3 hours. Later that evening,
he was baby sitting for another couple
that paid him $20 per hour for 5 hours.
What was Matt's average rate of pay per
hour for the day?
A.$15.00 per hour
B. $16.25 per hour
C.$18.75 per hour
D.$19.50 per hour

$16.25

Step-by-step explanation:

10 x 3= $30 for the friends house

20 x 5= $100 for the other couple

Add them up and you'll get $130 divide the amount of hours he baby-sit which is 8 hours. Therefore $130/ 8 equals to $16.25 which is Matts average pay per hour of the day.

b

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).