The food truck Guac and Roll is selling tacos (t) for $2.00 and burritos (b) for $3.50. A competing truck, Nacho Business, sells both tacos
and burritos for $3.00 a piece. If Guac and Roll made $855 in one day and
Nacho Business made $990, but they both sold the same amount of tacos
and burritos, how many of each did they sell?

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.

You move the constant to the right side and change its sign to be 9z= -6 -8. that’s the first step.the second step would be calculate the difference of -8-6 to get -14. you equation should now be 9z=-14the last step is to divide both sides by 9 to get z=-14/9hope this