Brian is a software salesman. let y represent his total pay (in dollars). let x represent the number of copies of math is fun he sells. suppose that x and y are related by the equation 1600+70x=y . answer the questions below. note that a change can be an increase or a decrease. for an increase, use a positive number. for a decrease, use a negative number.

what is the change in brian's total pay for each copy of math is fun he sells? $

what is brian's total pay if he doesn't sell any copies of math is fun? $

what? ?

what type of question is thiss

step-by-step explanation:

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!