math question !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! its a hard one?

Question

you have entered a marathon to raise money for charity. you have recieved pleges of $.20,$.10 and $.15 per mile you complete.

write a expression for the total u would earn for the charity if u complete 10 miles

write an equivalent expression using the disributive property.

Answer 1

Same as the last one, but multiply all of the factors by 10

$2x+$1y+$1.5z=total

This expression already factors in the fact that you are going to run 10 miles. The x, y, and z are the numbers of people who pledge those amounts per mile. You distribute the 10 by multiply the cent amounts and getting dollar amounts.

Answer 2

3

Answer 3

$.20,$.10 and $.15 per mile

So the total all together is

10 x $.20 + 10 x $.10 + 10 x $.15

This is the same as 10 x ($.20 + $.10 + $.15) using disributive property.

Answer 4

I cant tell if you are saying (20cents, 10 cents, 15 cents per mile) or dollars?

either way:
x = #miles

a. write a expression for the total u would earn for the charity if u complete 10 miles
.20x+.10x+.15x = money earned
b. write an equivalent expression using the disributive property.
x(.20 +.10+.15) = money earned

Answer 5

Total money will be "T"
the number of miles run will be "X"

T = ($.20)x + ($.10)x + ($.15)x

since all amounts are multiplied by x, you can rearrange the equation to look like this

T = x($.20 +$.10 +$.15)
T = x($.45)
10miles were completed so x = 10
T = 10($.45)
T = $4.50

The expression using the distributive property is

T = ($.20)x + ($.10)x + ($.15)x
T = ($.20)10 + ($.10)10 + ($.15)10
T = $2.00 + $1.00 + $1.50
T = $4.50

Answer 6

0.2*floor(x/10)*10 + 0.1*floor(x/10) *10+ 0.15*Floor(x/10).*10

Where floor(q), is a function that returns the largest integer less than or equal to q.

Remember that you can only get paid if you complete the 10 miles. This is how the "floor()" function will help.

If you actually complete the 10 miles, you will make
$4.50. If you do not complete it then you get $0

Answer 7

a.) .2*10+.1*10+.15*10=$ or (.2+.1+.15)*10=$

Not sure what you're asking in teh second Q

Answer 8

.2 x 10 + .1 x 10 + .15 x 10

2 +1+ 1.5

$4.50

Answer 9

10 (.20 * a + .10 * b + .15 * c) = Total

Where a = number of 20 cent/mile pledges,
b = number of 10 cent/mile pledges, and
c = number of 15 cent/mile pledges.

2a + b + 1.5c = Total

Answer 10

well, you'll earn the following amounts...

0.20 * 10 = $2.00

0.10 * 10 = $1.00

0.15 * 10 = $1.50

add them together to get

0.20 * 10 + 0.10 * 10 + 0.15 * 10 = $4.50

or...

10 * (0.20 + 0.10 + 0.15)

either way you've earned a total of $4.50