Two mechanics worked on a car. The first mechanic charged $45 per hour, and the second mechanic charged $115 per hour. The mechanics worked for a combined total of 15 hours, and together they charged a total of $1025. How long did each mechanic work?

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!

the answer is 40.

proof:

current in the circuit at time t is /, then the power delivered to the resistor is

step-by-step explanation: