Mrs. McIntire, a seventh-grade math teacher, is grading papers. Three students gave the following responses to the same math problem: Student one: 1/−2
Student two: −(1/2)
Student three: − 1/2

On Mrs. McIntire’s answer key for the assignment, the correct answer is −0.5. Which student answer(s) is (are)correct? Explain.

40 minutes

step-by-step explanation:

add the time and multiply by 2

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

the answer is 1/4

step-by-step explanation:

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b