After 4 hours, Randy had traveled 228 miles. If he travels at a constant speed, how far will he have traveled after 9 hours?

513 miles

Step-by-step explanation:

228/4 = 57

57 * 9 = 513

513

Step-by-step explanation:

he travels 57 miles every hour, we can find this out by doing 228/4

then doing 57*9 and we get 513

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

i believe that the answer is

b. y-1=-2(x-4)

hope this !