I REALLY NEED HELP WITH MY MATH

1. The first one

and

2. the last one

Step-by-step explanation:

The first one because,

-9(2/3x)=-6, and thats the same in the question. As well as the -9x1

The last one because,

-9(2/3x+1)=

-6x - 9

because, negative 9 times positive 1 will be negative 9.

so it will be:

-6x - 9

I hope this helped     :)

income. 10x+1300

expenses 3x+(1800+1500)

expenses 3x+3300

to break even:

income = expense,

10x + 1300 = 3x + 3300,

solve for x.

step-by-step explanation:

mark brainliest

for this case we have that by definition, the volume of a cylinder is given by:

where:

r: it's the radio

h: it's the height

we have as data that:

substituting:

so, the cylinder volume is

option d