Chris is a college student who can work a maximum of 40 hours per week. he needs to make at least $900 in order to cover his expenses. his tutoring job pays $25 per hour and he also makes $15 per hour refereeing soccer matches. find the constraints for this situation and determine which point is a valid solution to the system, where x is the number of hours chris spends tutoring and y is the number of hours he spends refereeing.

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!

what is the information provided?

step-by-step explanation: