Solve the equation 4 = 2m — 5n for m. What is the value of m when n = —2, 0, and 2? A. m = 5n + 2; –8, 2, 12

B. m = 5n + 2; –3, 2, 7
2

C. m = 2n –4 ; – 8 , – 4 ,0
5 5 5 5

D. m = 2 –5n ; 7, 2, –3
2

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!