I did not even read this because im too very lazy but it is prolly easy so can you help me please its due today Which of the following is true about this mathematical statement: 2x + 9 = 7 + x ?
A. It is an equation because it has an equal sign.
B. It is an equation because it has the variable x.
C. It is an expression because it has an equal sign.
D. This is an equation because it has a mathematical operation sign.

B.It is an equation because it has the variable x.

i understand 100% 10/10 hit or miss?

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!