If (ax - 4)(bx + 7) = 10xsquared + cx – 28
for all values of x, and a + b = 7, then
there are two possible values of c.
what is one of those two possible values of c ?

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.

They have to let you pass middle school

14 estimated and 13.62 exacti’m pretty sure..