the solution for which of the following requires use of absolute value?a: At a school fundraiser, students washed twenty cars for 5$ per vehicle. Each driver donated and additional $3-$5. How much money was raised.b: A local merchant donates 10% of her sales on the first day of each month to a local cause. if her annual donations total $1500 what is her average daily sales?c: If gas cost $3.50 per gallon, how much did Celia pay to fill her tank with 8.2 gallons?d: Marissa ran a half marathon (about 13.1 miles) in 2 hours and 4 minutes. what was her speed?

Part a) At a school fundraiser, students washed twenty cars for 5$ per vehicle. Each driver donated and additional $3-$5. How much money was raised.

we know that

raised money=total vehicle*[$5+absolute value($3-$5)]
raised money=20*[$5+absolute value(-2)]
raised money=20*[$7]
raised money=$140
the answer Part a) is $140

Part b)A local merchant donates 10% of her sales on the first day of each month to a local cause. if her annual donations total $1500 what is her average daily sales?

step 1
divide $1500 by 12
1500/12=$125/month

if $125 is ------------> 10%
x------------------> 100%
x=100*125/10-----> x=$1250

the answer Part b) is $1250

Part c)If gas cost $3.50 per gallon, how much did Celia pay to fill her tank with 8.2 gallons?

multiply $3.50 by 8.2 gallons
3.5*8.2=$28.7

the answer Part c) is $28.7

Part d) Marissa ran a half marathon (about 13.1 miles) in 2 hours and 4 minutes. what was her speed?

we know that
speed=distance /time
distance=13.1 miles
time=2 hours and 4 minutes----> 2+(4/60)---> 2.07 hour
time=2 hours and 4 minutes----> 2*60+(4)---> 124 minutes
speed=13.1/2.07----> 6.33 miles/hour
speed=13.1/124----> 0.106 miles/minutes

the answer part d) is 6.33 miles/hour or 0.106 miles/minutes



The solution to problem a) requires the use of absolute value